language: ruby
sudo: false
cache: bundler
rvm:
  - 1.9.3
  - 2.0.0
  - 2.1.0
  - 2.2.0
  - ruby-head

language: ruby
sudo: false
cache: bundler
rvm:
  - 2.0.0
  - 2.1
  - 2.2
  - 2.3
  - 2.4

Add newer ruby versions to CI
Add newer ruby versions to CI
