language: ruby
before_install:
  - gem install bundler -v 1.17.3
matrix:
  include:
    # - rvm: 2.1.0
    #   gemfile: Gemfile
    - rvm: 2.2.4
      gemfile: Gemfile
    - rvm: 2.3.3
      gemfile: Gemfile
    - rvm: 2.4.0
      gemfile: Gemfile
    - rvm: 2.5.0
      gemfile: Gemfile
      script: bundle exec rake test