Update CI builds and add CircleCI

* Adds a configuration for CircleCI
* Update the tested Ruby version to 2.3.1
* Ensure Node.js v6 is installed for linters

.travis.yml

@@ -1,6 +1,7 @@
+# Project specific config
 language: ruby
 rvm:
-  - 2.2.3
+  - 2.3.1
 
 os:
   - linux
@@ -13,16 +14,25 @@ env:
 
 install:
   - gem install rubocop
+  # Installed for linting the project
+  - nvm install 6
 
 before_script:
+  - node --version
   - rubocop --version
+
+# Generic setup follows
 script: 'curl -s https://raw.githubusercontent.com/atom/ci/master/build-package.sh | sh'
 
 notifications:
   email:
     on_success: never
     on_failure: change
 
+branches:
+  only:
+    - master
+
 git:
   depth: 10
 
@@ -35,7 +45,3 @@ addons:
     - git
     - libgnome-keyring-dev
     - fakeroot
-
-branches:
-  only:
-    - master

appveyor.yml

@@ -4,21 +4,23 @@ platform: x64
 
 environment:
   APM_TEST_PACKAGES:
-  RUBY_VERSION: 22-x64
+  RUBY_VERSION: 23-x64
   matrix:
     - ATOM_CHANNEL: stable
     - ATOM_CHANNEL: beta
 
 install:
-  - ps: Install-Product node 5
+  - ps: Install-Product node 6
   - SET PATH=C:\Ruby%RUBY_VERSION%\bin;%PATH%
   - gem update --system
   - gem install rubocop --no-document
 
 before_build:
+  - node --version
   - ruby --version
   - gem --version
   - rubocop --version
+
 build_script:
   - ps: iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/atom/ci/master/build-package.ps1'))
 
@@ -28,3 +30,5 @@ branches:
 
 deploy: off
 test: off
+clone_depth: 10
+skip_tags: true

circle.yml

@@ -0,0 +1,19 @@
+dependencies:
+  override:
+    - curl -L https://atom.io/download/deb -o atom-amd64.deb
+    - sudo dpkg --install atom-amd64.deb || true
+    - sudo apt-get update
+    - sudo apt-get -f install
+    - apm install
+test:
+  override:
+    - npm run lint
+    - atom -v
+    - apm -v
+    - apm test
+
+machine:
+  node:
+    version: 6
+  ruby:
+    version: 2.3.1