language: ruby
before_install:
 - gem install bundler
rvm:
  - "2.0.0"
  - "2.1.0"
  - "2.1.1"
  - "2.1.4"
  - "2.2.0"
  - "2.3.1"
  - "2.4.1"
  - "2.4.2"
  - jruby-9.0.5.0