language: ruby
rvm:
  - 2.1.5
  - 2.2.0
gemfile:
  - gemfiles/rails_4.1.0.gemfile
  - gemfiles/rails_4.2.0.gemfile

language: ruby
rvm:
  - 2.1.5
  - 2.2.0
gemfile:
  - gemfiles/rails_4.1.0.gemfile
  - gemfiles/rails_4.2.0.gemfile
notifications:
  email: false
sudo: false

Use Travis' Docker container infrastructure
Use Travis' Docker container infrastructure

* Builds start sooner and run faster.
* Open source builds on the container infrastructure use bundle cache.

http://blog.travis-ci.com/2014-12-17-faster-builds-with-container-based-infrastructure/65754960

Also turn off email notifications.
