Merge pull request #50 from castle/update-ruby-versions

bump ruby versions and add coditsu v2

.coditsu.yml

@@ -0,0 +1,3 @@
+api_key: <%= ENV['CODITSU_API_KEY'] %>
+api_secret: <%= ENV['CODITSU_API_SECRET'] %>
+repository_id: <%= ENV['CODITSU_REPOSITORY_ID'] %>

.gitignore

@@ -30,4 +30,5 @@
 .rvmrc
 
 # Example files
-/example/.bundle
+/example/.bundle
+vendor

.travis.yml

@@ -1,12 +1,44 @@
+services:
+  - docker
+
 dist: trusty
 sudo: false
-language: ruby
 cache: bundler
-rvm:
-  - 2.3.7
-  - 2.4.4
-  - 2.5.1
-  - ruby-head
-
-before_install:
-  - gem install bundler
+
+git:
+  depth: false
+
+test: &test
+  stage: test
+  language: ruby
+  before_install:
+    - gem install bundler
+    - gem update --system
+
+jobs:
+  include:
+    - <<: *test
+      rvm: 2.6.0
+    - <<: *test
+      rvm: 2.5.3
+    - <<: *test
+      rvm: 2.4.5
+    - <<: *test
+      rvm: 2.3.8
+
+    - stage: coditsu
+      language: script
+      before_script:
+        - docker create -v /sources --name sources alpine:3.4 /bin/true
+        - docker cp ./ sources:/sources
+      script: >
+        docker run
+        -e CODITSU_API_KEY
+        -e CODITSU_API_SECRET
+        -e CODITSU_REPOSITORY_ID
+        --volumes-from sources
+        coditsu/build-runner:latest
+
+stages:
+  - coditsu
+  - test