language: ruby
rvm:
  - 1.9.3
  - 2.0.0
  - 2.1
  - ruby-head
  - jruby
matrix:
  allow_failures:
    - rvm: ruby-head
before_install: gem update --remote bundler
script: bundle exec rake ci

language: ruby
rvm:
  - 1.9.3
  - 2.0.0
  - 2.1
  - ruby-head
  - jruby
matrix:
  allow_failures:
    - rvm: ruby-head
before_install: gem update --remote bundler
script: bundle exec rake ci
sudo: false
cache: bundler

Use the Docker-based Travis CI environment
Use the Docker-based Travis CI environment

http://blog.travis-ci.com/2014-12-17-faster-builds-with-container-based-infrastructure/
