rvm:
  - 2.0.0-p598
  - 2.1.6
  - 2.2.2
branches:
  only:
    - master

rvm:
  - 2.1.9
  - 2.2.5
  - 2.3.1
  - ruby-head

before_insall:
  - gem install bundler

matrix:
  allow_failures:
    - rvm: ruby-head


Update ruby versions and ensure to install bundler before testing
Update ruby versions and ensure to install bundler before testing
