before_install:
  - gem install bundler

matrix:
  include:
  - rvm: 2.5.3
    gemfile: gemfiles/rails-6-0-stable.gemfile
  - rvm: 2.6.0
    gemfile: gemfiles/rails-6-0-stable.gemfile
  - rvm: 2.5.1
    gemfile: gemfiles/rails-5-2-stable.gemfile
  - rvm: 2.4.5
    gemfile: gemfiles/rails-4-2-stable.gemfile
  - rvm: 2.3.3
    gemfile: gemfiles/rails-4-1-stable.gemfile
  - rvm: 2.3.3
    gemfile: gemfiles/rails-3-2-stable.gemfile