language: ruby

rvm:
  - 1.9.3
  - 2.0.0
  - 2.1
  - 2.2

notifications:
  email: false

language: ruby

cache: bundler

sudo: false

rvm:
  - 1.9.3
  - 2.0.0
  - 2.1
  - 2.2

notifications:
  email: false

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
