diff --git a/.Rbuildignore b/.Rbuildignore
index 4f18dde..7196d94 100644
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -2,3 +2,4 @@
 ^\.Rprofile$
 ^.*\.Rproj$
 ^\.Rproj\.user$
+^\.travis\.yml$
diff --git a/.Rprofile b/.Rprofile
deleted file mode 100644
index 7322b30..0000000
--- a/.Rprofile
+++ /dev/null
@@ -1,3 +0,0 @@
-#### -- Packrat Autoloader (version 0.4.7-1) -- ####
-source("packrat/init.R")
-#### -- End Packrat Autoloader -- ####
diff --git a/Description b/Description
index a9ff5d8..a68847f 100644
--- a/Description
+++ b/Description
@@ -1,6 +1,6 @@
 Package: RiskNetwork
 Version: 0.1.0
-Title: Risk Network modeling and analysis
+Title: Risk Network Modeling and Analysis
 Description: RiskNetwork is a Shiny web application for risk network modeling and analysis.
 URL: https://github.com/paulgovan/risknetwork
 BugReports: https://github.com/paulgovan/risknetwork/issues
diff --git a/R/RiskNetwork.R b/R/RiskNetwork.R
index a9955f2..4cd24e4 100644
--- a/R/RiskNetwork.R
+++ b/R/RiskNetwork.R
@@ -10,6 +10,10 @@
 #' @import shiny
 #' @import shinydashboard
 #' @export
+#' @examples
+#' if (interactive()) {
+#'   RiskNetwork()
+#' }
 RiskNetwork <- function() {
   shiny::runApp(system.file('rn', package='RiskNetwork'))
 }
diff --git a/man/RiskNetwork.Rd b/man/RiskNetwork.Rd
index a1467a1..1a013c1 100644
--- a/man/RiskNetwork.Rd
+++ b/man/RiskNetwork.Rd
@@ -10,4 +10,9 @@ RiskNetwork()
 RiskNetwork is a Shiny web application for risk network modeling and
 analysis.
 }
+\examples{
+if (interactive()) {
+  RiskNetwork()
+}
+}
 
diff --git a/packrat/init.R b/packrat/init.R
deleted file mode 100644
index 29aaa44..0000000
--- a/packrat/init.R
+++ /dev/null
@@ -1,217 +0,0 @@
-local({
-
-  ## Helper function to get the path to the library directory for a
-  ## given packrat project.
-  getPackratLibDir <- function(projDir = NULL) {
-    path <- file.path("packrat", "lib", R.version$platform, getRversion())
-
-    if (!is.null(projDir)) {
-
-      ## Strip trailing slashes if necessary
-      projDir <- sub("/+$", "", projDir)
-
-      ## Only prepend path if different from current working dir
-      if (!identical(normalizePath(projDir), normalizePath(getwd())))
-        path <- file.path(projDir, path)
-    }
-
-    path
-  }
-
-  ## Ensure that we set the packrat library directory relative to the
-  ## project directory. Normally, this should be the working directory,
-  ## but we also use '.rs.getProjectDirectory()' if necessary (e.g. we're
-  ## rebuilding a project while within a separate directory)
-  libDir <- if (exists(".rs.getProjectDirectory"))
-    getPackratLibDir(.rs.getProjectDirectory())
-  else
-    getPackratLibDir()
-
-  ## Unload packrat in case it's loaded -- this ensures packrat _must_ be
-  ## loaded from the private library. Note that `requireNamespace` will
-  ## succeed if the package is already loaded, regardless of lib.loc!
-  if ("packrat" %in% loadedNamespaces())
-    try(unloadNamespace("packrat"), silent = TRUE)
-
-  if (suppressWarnings(requireNamespace("packrat", quietly = TRUE, lib.loc = libDir))) {
-
-    # Check 'print.banner.on.startup' -- when NA and RStudio, don't print
-    print.banner <- packrat::get_opts("print.banner.on.startup")
-    if (print.banner == "auto" && is.na(Sys.getenv("RSTUDIO", unset = NA))) {
-      print.banner <- TRUE
-    } else {
-      print.banner <- FALSE
-    }
-    return(packrat::on(print.banner = print.banner))
-  }
-
-  ## Escape hatch to allow RStudio to handle bootstrapping. This
-  ## enables RStudio to provide print output when automagically
-  ## restoring a project from a bundle on load.
-  if (!is.na(Sys.getenv("RSTUDIO", unset = NA)) &&
-      is.na(Sys.getenv("RSTUDIO_PACKRAT_BOOTSTRAP", unset = NA))) {
-    Sys.setenv("RSTUDIO_PACKRAT_BOOTSTRAP" = "1")
-    setHook("rstudio.sessionInit", function(...) {
-      # Ensure that, on sourcing 'packrat/init.R', we are
-      # within the project root directory
-      if (exists(".rs.getProjectDirectory")) {
-        owd <- getwd()
-        setwd(.rs.getProjectDirectory())
-        on.exit(setwd(owd), add = TRUE)
-      }
-      source("packrat/init.R")
-    })
-    return(invisible(NULL))
-  }
-
-  ## Bootstrapping -- only performed in interactive contexts,
-  ## or when explicitly asked for on the command line
-  if (interactive() || "--bootstrap-packrat" %in% commandArgs(TRUE)) {
-
-    message("Packrat is not installed in the local library -- ",
-            "attempting to bootstrap an installation...")
-
-    ## We need utils for the following to succeed -- there are calls to functions
-    ## in 'restore' that are contained within utils. utils gets loaded at the
-    ## end of start-up anyhow, so this should be fine
-    library("utils", character.only = TRUE)
-
-    ## Install packrat into local project library
-    packratSrcPath <- list.files(full.names = TRUE,
-                                 file.path("packrat", "src", "packrat")
-    )
-
-    ## No packrat tarballs available locally -- try some other means of installation
-    if (!length(packratSrcPath)) {
-
-      message("> No source tarball of packrat available locally")
-
-      ## There are no packrat sources available -- try using a version of
-      ## packrat installed in the user library to bootstrap
-      if (requireNamespace("packrat", quietly = TRUE) && packageVersion("packrat") >= "0.2.0.99") {
-        message("> Using user-library packrat (",
-                packageVersion("packrat"),
-                ") to bootstrap this project")
-      }
-
-      ## Couldn't find a user-local packrat -- try finding and using devtools
-      ## to install
-      else if (requireNamespace("devtools", quietly = TRUE)) {
-        message("> Attempting to use devtools::install_github to install ",
-                "a temporary version of packrat")
-        library(stats) ## for setNames
-        devtools::install_github("rstudio/packrat")
-      }
-
-      ## Try downloading packrat from CRAN if available
-      else if ("packrat" %in% rownames(available.packages())) {
-        message("> Installing packrat from CRAN")
-        install.packages("packrat")
-      }
-
-      ## Fail -- couldn't find an appropriate means of installing packrat
-      else {
-        stop("Could not automatically bootstrap packrat -- try running ",
-             "\"'install.packages('devtools'); devtools::install_github('rstudio/packrat')\"",
-             "and restarting R to bootstrap packrat.")
-      }
-
-      # Restore the project, unload the temporary packrat, and load the private packrat
-      packrat::restore(prompt = FALSE, restart = TRUE)
-
-      ## This code path only reached if we didn't restart earlier
-      unloadNamespace("packrat")
-      requireNamespace("packrat", lib.loc = libDir, quietly = TRUE)
-      return(packrat::on())
-
-    }
-
-    ## Multiple packrat tarballs available locally -- try to choose one
-    ## TODO: read lock file and infer most appropriate from there; low priority because
-    ## after bootstrapping packrat a restore should do the right thing
-    if (length(packratSrcPath) > 1) {
-      warning("Multiple versions of packrat available in the source directory;",
-              "using packrat source:\n- ", shQuote(packratSrcPath))
-      packratSrcPath <- packratSrcPath[[1]]
-    }
-
-
-    lib <- file.path("packrat", "lib", R.version$platform, getRversion())
-    if (!file.exists(lib)) {
-      dir.create(lib, recursive = TRUE)
-    }
-    lib <- normalizePath(lib, winslash = "/")
-
-    message("> Installing packrat into project private library:")
-    message("- ", shQuote(lib))
-
-    surround <- function(x, with) {
-      if (!length(x)) return(character())
-      paste0(with, x, with)
-    }
-
-    ## The following is performed because a regular install.packages call can fail
-    peq <- function(x, y) paste(x, y, sep = " = ")
-    installArgs <- c(
-      peq("pkgs", surround(packratSrcPath, with = "'")),
-      peq("lib", surround(lib, with = "'")),
-      peq("repos", "NULL"),
-      peq("type", surround("source", with = "'"))
-    )
-    installCmd <- paste(sep = "",
-                        "utils::install.packages(",
-                        paste(installArgs, collapse = ", "),
-                        ")")
-
-    fullCmd <- paste(
-      surround(file.path(R.home("bin"), "R"), with = "\""),
-      "--vanilla",
-      "--slave",
-      "-e",
-      surround(installCmd, with = "\"")
-    )
-    system(fullCmd)
-
-    ## Tag the installed packrat so we know it's managed by packrat
-    ## TODO: should this be taking information from the lockfile? this is a bit awkward
-    ## because we're taking an un-annotated packrat source tarball and simply assuming it's now
-    ## an 'installed from source' version
-
-    ## -- InstallAgent -- ##
-    installAgent <- 'InstallAgent: packrat 0.4.7-1'
-
-    ## -- InstallSource -- ##
-    installSource <- 'InstallSource: source'
-
-    packratDescPath <- file.path(lib, "packrat", "DESCRIPTION")
-    DESCRIPTION <- readLines(packratDescPath)
-    DESCRIPTION <- c(DESCRIPTION, installAgent, installSource)
-    cat(DESCRIPTION, file = packratDescPath, sep = "\n")
-
-    # Otherwise, continue on as normal
-    message("> Attaching packrat")
-    library("packrat", character.only = TRUE, lib.loc = lib)
-
-    message("> Restoring library")
-    restore(restart = FALSE)
-
-    # If the environment allows us to restart, do so with a call to restore
-    restart <- getOption("restart")
-    if (!is.null(restart)) {
-      message("> Packrat bootstrap successfully completed. ",
-              "Restarting R and entering packrat mode...")
-      return(restart())
-    }
-
-    # Callers (source-erers) can define this hidden variable to make sure we don't enter packrat mode
-    # Primarily useful for testing
-    if (!exists(".__DONT_ENTER_PACKRAT_MODE__.") && interactive()) {
-      message("> Packrat bootstrap successfully completed. Entering packrat mode...")
-      packrat::on()
-    }
-
-    Sys.unsetenv("RSTUDIO_PACKRAT_BOOTSTRAP")
-
-  }
-
-})
diff --git a/packrat/packrat.lock b/packrat/packrat.lock
deleted file mode 100644
index 957209e..0000000
--- a/packrat/packrat.lock
+++ /dev/null
@@ -1,311 +0,0 @@
-PackratFormat: 1.4
-PackratVersion: 0.4.7.1
-RVersion: 3.2.2
-Repos: CRAN=https://cran.rstudio.com/
-
-Package: DEoptimR
-Source: CRAN
-Version: 1.0-4
-Hash: 6194911c350d26147eb8815dc3556c40
-
-Package: NMF
-Source: CRAN
-Version: 0.20.6
-Hash: 632aad207ab2e551b33990c9f09ab8af
-Requires: RColorBrewer, colorspace, digest, doParallel, foreach,
-    ggplot2, gridBase, pkgmaker, registry, reshape2, rngtools, stringr
-
-Package: R6
-Source: CRAN
-Version: 2.1.2
-Hash: c515e41c73294952cbb33ee1c1be5a2d
-
-Package: RColorBrewer
-Source: CRAN
-Version: 1.1-2
-Hash: c0d56cd15034f395874c870141870c25
-
-Package: Rcpp
-Source: CRAN
-Version: 0.12.5
-Hash: 625a95cb4ef523a77ad02e140b715db6
-
-Package: base64enc
-Source: CRAN
-Version: 0.1-3
-Hash: c590d29e555926af053055e23ee79efb
-
-Package: bnlearn
-Source: CRAN
-Version: 4.0
-Hash: 8ef80e1a876c446a7ec0b6693ea72d9c
-
-Package: colorspace
-Source: CRAN
-Version: 1.2-6
-Hash: 00bb12245cd975c450cc4a960884fa15
-
-Package: d3heatmap
-Source: CRAN
-Version: 0.6.1.1
-Hash: 7447e0ce63f688d48d6c160f7ba6b398
-Requires: base64enc, dendextend, htmlwidgets, png, scales
-
-Package: dendextend
-Source: CRAN
-Version: 1.2.0
-Hash: fd858c4254ec5c9871a28e902ab01fa2
-Requires: fpc, ggplot2, magrittr, whisker
-
-Package: dichromat
-Source: CRAN
-Version: 2.0-0
-Hash: 08eed0c80510af29bb15f840ccfe37ce
-
-Package: digest
-Source: CRAN
-Version: 0.6.9
-Hash: fd55d5a024f160fc001a5ece1e27782d
-
-Package: diptest
-Source: CRAN
-Version: 0.75-7
-Hash: de93e5330ff45c5795d0bae12c8a9695
-
-Package: doParallel
-Source: CRAN
-Version: 1.0.10
-Hash: df91a7abfa938c06ad87b9a2b9269adb
-Requires: foreach, iterators
-
-Package: flexmix
-Source: CRAN
-Version: 2.3-13
-Hash: 4c5ae92368e1cc01c26afd1e67b66cd3
-Requires: modeltools
-
-Package: foreach
-Source: CRAN
-Version: 1.4.3
-Hash: cd53ef4cf29dc59ce3f8c5c1af735fd1
-Requires: iterators
-
-Package: fpc
-Source: CRAN
-Version: 2.1-10
-Hash: e537c1c8a52f67db5296c272e9090cbc
-Requires: diptest, flexmix, kernlab, mclust, mvtnorm, prabclus,
-    robustbase, trimcluster
-
-Package: ggplot2
-Source: CRAN
-Version: 2.1.0
-Hash: 50e297b0191179c39c7dcae0eff72b51
-Requires: digest, gtable, plyr, reshape2, scales
-
-Package: gridBase
-Source: CRAN
-Version: 0.4-7
-Hash: d4b7f73c0fdf11d18d1e1ae1643ac4ec
-
-Package: gtable
-Source: CRAN
-Version: 0.2.0
-Hash: cd78381a9d3fea966ac39bd0daaf5554
-
-Package: htmltools
-Source: CRAN
-Version: 0.3.5
-Hash: 645c10ce7e6c8dbbedb358a829c41848
-Requires: Rcpp, digest
-
-Package: htmlwidgets
-Source: CRAN
-Version: 0.6
-Hash: 267a36d738dd98cec3dc9c471becb717
-Requires: htmltools, jsonlite, yaml
-
-Package: httpuv
-Source: CRAN
-Version: 1.3.3
-Hash: 85ddfbe704ae0ee4f884604de445fb75
-Requires: Rcpp
-
-Package: igraph
-Source: CRAN
-Version: 1.0.1
-Hash: 26ac36402e881905359daabfd9ba4057
-Requires: NMF, irlba, magrittr
-
-Package: irlba
-Source: CRAN
-Version: 2.0.0
-Hash: 53647cf593a0f5e5ae4f713d125499d1
-
-Package: iterators
-Source: CRAN
-Version: 1.0.8
-Hash: 488b93c2a4166db0d15f1e8d882cb1d4
-
-Package: jsonlite
-Source: CRAN
-Version: 0.9.22
-Hash: a465329f66afd33012e1aedfe5ba2e20
-
-Package: kernlab
-Source: CRAN
-Version: 0.9-24
-Hash: 37726d9307b8183493bb9187ea0cde8c
-
-Package: labeling
-Source: CRAN
-Version: 0.3
-Hash: ecf589b42cd284b03a4beb9665482d3e
-
-Package: lattice
-Source: CRAN
-Version: 0.20-33
-Hash: d7158cf4e63e8c12cb227738076b37d8
-
-Package: magrittr
-Source: CRAN
-Version: 1.5
-Hash: bdc4d48c3135e8f3b399536ddf160df4
-
-Package: mclust
-Source: CRAN
-Version: 5.2
-Hash: 77406ad6a64bb972a5e05b658161261d
-
-Package: mime
-Source: CRAN
-Version: 0.4
-Hash: b08c52dae92a0a11e64a4deea032ec33
-
-Package: modeltools
-Source: CRAN
-Version: 0.2-21
-Hash: 3dc03397b2a4375c8a5e5f09c8cf0ae1
-
-Package: munsell
-Source: CRAN
-Version: 0.4.3
-Hash: f96d896947fcaf9b6d0074002e9f4f9d
-Requires: colorspace
-
-Package: mvtnorm
-Source: CRAN
-Version: 1.0-5
-Hash: 55a3581188e15f13f5ba19c18e151ac2
-
-Package: networkD3
-Source: CRAN
-Version: 0.2.11
-Hash: 4313f4095d09ab8343d46c3879d6e8d3
-Requires: htmlwidgets, igraph, magrittr
-
-Package: packrat
-Source: CRAN
-Version: 0.4.7-1
-Hash: 16ca16d36eb18d1d16113606ecc5c400
-
-Package: pkgmaker
-Source: CRAN
-Version: 0.22
-Hash: 2e5fc2a6b7eaeb1e1d397a8dc5f54480
-Requires: digest, registry, stringr, xtable
-
-Package: plyr
-Source: CRAN
-Version: 1.8.4
-Hash: 9710078c5fd126420ec039be1db44994
-Requires: Rcpp
-
-Package: png
-Source: CRAN
-Version: 0.1-7
-Hash: 421d7d6e0fb4bd885ecbd909b6456b8b
-
-Package: prabclus
-Source: CRAN
-Version: 2.2-6
-Hash: e646245afbb6b8ed25e22e8a76b781cd
-Requires: mclust
-
-Package: registry
-Source: CRAN
-Version: 0.3
-Hash: f9447c26b51b8c96f53720c5ff862c93
-
-Package: reshape2
-Source: CRAN
-Version: 1.4.1
-Hash: 4c341beb363831f5320f678f7f1b679d
-Requires: Rcpp, plyr, stringr
-
-Package: rhandsontable
-Source: CRAN
-Version: 0.3.1
-Hash: 1c15cbba7ff36cf5c0ef7e5010cffd76
-Requires: htmlwidgets, jsonlite, magrittr
-
-Package: rngtools
-Source: CRAN
-Version: 1.2.4
-Hash: 4db0661fe95ab6eb3d6339495bf22003
-Requires: digest, pkgmaker, stringr
-
-Package: robustbase
-Source: CRAN
-Version: 0.92-6
-Hash: 2819fff51bd1e827b611126fc0227d46
-Requires: DEoptimR
-
-Package: scales
-Source: CRAN
-Version: 0.4.0
-Hash: bce90b73946711302c29ceabdb08241c
-Requires: RColorBrewer, Rcpp, dichromat, labeling, munsell, plyr
-
-Package: shiny
-Source: CRAN
-Version: 0.13.2
-Hash: 28d6903a44dc53bd4823fa43ccdc08e5
-Requires: R6, digest, htmltools, httpuv, jsonlite, mime, xtable
-
-Package: shinydashboard
-Source: CRAN
-Version: 0.5.1
-Hash: 3d9eaa2d45febd7c1237f93a4c7c210d
-Requires: htmltools, shiny
-
-Package: stringi
-Source: CRAN
-Version: 1.1.1
-Hash: 48f2afc5dfecb65ba32a87d38b3533ff
-
-Package: stringr
-Source: CRAN
-Version: 1.0.0
-Hash: 2676dd5f88890910962b733b0f9540e1
-Requires: magrittr, stringi
-
-Package: trimcluster
-Source: CRAN
-Version: 0.1-2
-Hash: 662a899a1377c7d3f2cef1722e335aff
-
-Package: whisker
-Source: CRAN
-Version: 0.3-2
-Hash: 803d662762e532705c2c066a82d066e7
-
-Package: xtable
-Source: CRAN
-Version: 1.8-2
-Hash: 7293235cfcc14cdff1ce7fd1a0212031
-
-Package: yaml
-Source: CRAN
-Version: 2.1.13
-Hash: 4854ccabebc225e8a7309fb4a74980de
diff --git a/packrat/packrat.opts b/packrat/packrat.opts
deleted file mode 100644
index 502a18f..0000000
--- a/packrat/packrat.opts
+++ /dev/null
@@ -1,11 +0,0 @@
-auto.snapshot: TRUE
-use.cache: FALSE
-print.banner.on.startup: auto
-vcs.ignore.lib: TRUE
-vcs.ignore.src: FALSE
-external.packages: 
-local.repos: 
-load.external.packages.on.startup: TRUE
-ignored.packages: 
-quiet.package.installation: TRUE
-snapshot.recommended.packages: FALSE
diff --git a/packrat/src/DEoptimR/DEoptimR_1.0-4.tar.gz b/packrat/src/DEoptimR/DEoptimR_1.0-4.tar.gz
deleted file mode 100644
index 6985d95..0000000
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