Add XO and AVA (#378)

* Add XO and AVA

Also did some cleanup and removed internal `grunt` plugins.

* Fix test script on Windows

.editorconfig

@@ -1,17 +1,12 @@
-# editorconfig.org
 root = true
 
 [*]
-indent_style = space
-indent_size = 4
+indent_style = tab
 end_of_line = lf
 charset = utf-8
 trim_trailing_whitespace = true
 insert_final_newline = true
 
-[package.json]
+[*.yml]
 indent_style = space
 indent_size = 2
-
-[*.md]
-trim_trailing_whitespace = false

.gitattributes

@@ -1 +1,2 @@
 * text=auto
+*.js text eol=lf

.gitignore

@@ -1,4 +1 @@
 node_modules
-npm-debug.log
-tmp
-tmp-cache/

.travis.yml

@@ -1,15 +1,7 @@
-sudo: false
 language: node_js
 node_js:
-  - "0.10"
-  - "0.12"
-  - "4"
-  - "5"
-  - "iojs"
-before_install:
-  - if [ "$TRAVIS_NODE_VERSION" = "0.10" ]; then npm install -g npm@2; fi
-matrix:
-  fast_finish: true
-cache:
-  directories:
-    - node_modules
+  - '8'
+  - '6'
+  - '4'
+  - '0.12'
+  - '0.10'

appveyor.yml

@@ -1,44 +1,21 @@
-# http://www.appveyor.com/docs/appveyor-yml
-
-clone_depth: 10
-
-version: "{build}"
-
-# What combinations to test
 environment:
   matrix:
-    - nodejs_version: "0.10"
-      platform: x86
-    - nodejs_version: "0.12"
-      platform: x86
-    - nodejs_version: "4"
-      platform: x64
-    - nodejs_version: "4"
-      platform: x86
-    - nodejs_version: "5"
-      platform: x86
-
+    - nodejs_version: '8'
+    - nodejs_version: '6'
+    - nodejs_version: '4'
+    - nodejs_version: '0.12'
+    - nodejs_version: '0.10'
 install:
-  - ps: Install-Product node $env:nodejs_version $env:platform
-  - ps: >-
-      if ($env:nodejs_version -eq "0.10") {
-        npm -g install npm@2
-        $env:PATH="$env:APPDATA\npm;$env:PATH"
-      }
+  - ps: Install-Product node $env:nodejs_version
+  - set CI=true
+  - npm -g install npm@latest
+  - set PATH=%APPDATA%\npm;%PATH%
   - npm install
-
-test_script:
-  # Output useful info for debugging
-  - node --version && npm --version
-  # We test multiple Windows shells because of prior stdout buffering issues
-  # filed against Grunt. https://github.com/joyent/node/issues/3584
-  - ps: "npm test # PowerShell" # Pass comment to PS for easier debugging
-  - cmd: npm test
-
-build: off
-
 matrix:
   fast_finish: true
-
-cache:
-  - node_modules -> package.json
+build: off
+shallow_clone: true
+test_script:
+  - node --version
+  - npm --version
+  - npm test