before_install:
  - gem install bundler
language: ruby
rvm:
  - 1.9.3
  - 2.0.0
  - 2.1.1
  - 2.2.1

before_install:
  - gem install bundler
language: ruby
rvm:
  - 1.9.3
  - 2.0.0
  - 2.1.8
  - 2.2.5
  - 2.3.1

Update ruby versions for Travis, using latest patchlevels and adding 2.3.
Update ruby versions for Travis, using latest patchlevels and adding 2.3.
