language: ruby
rvm:
  - 1.8.7
  - 1.9.3
  - 2.0.0
  - 2.1.5
  - jruby
  #- rbx-2 # Fails on Travis
git:
  submodules: false
gemfile:
  - Gemfile
matrix:
  include:
    - rvm: 2.1.5
      gemfile: gemfiles/rubyracer
    - rvm: 2.0.0
      gemfile: gemfiles/rubyracer
    - rvm: jruby-19mode
      gemfile: gemfiles/rubyrhino

sudo: false
language: ruby
cache: bundler
rvm:
  - 1.8.7
  - 1.9.3
  - 2.0.0
  - 2.1.5
  - jruby
  #- rbx-2 # Fails on Travis
git:
  submodules: false
gemfile:
  - Gemfile
matrix:
  include:
    - rvm: 2.1.5
      gemfile: gemfiles/rubyracer
    - rvm: 2.0.0
      gemfile: gemfiles/rubyracer
    - rvm: jruby-19mode
      gemfile: gemfiles/rubyrhino

Configure Travis for better build performance
[TASK] Configure Travis for better build performance

* set sudo: false so Travis can use their new container-based infrastructure
* enable bundler caching
