language: ruby
rvm:
  - 2.2
  - 2.3.0
before_install:
  - gem update --system
  - gem --version
  - gem install bundler

language: ruby
rvm:
  - 2.2
  - 2.3.0
before_install:
  - gem update --system
  - gem --version
  - gem install bundler -v 1.17.3

Install bundler 1.17.3 to ensure compatibility with ruby 2.2
Install bundler 1.17.3 to ensure compatibility with ruby 2.2
