language: ruby
rvm:
  - 2.1.0
before_install: gem install bundler -v 1.10.6

language: ruby
rvm:
  - 2.2.7
  - 2.3.4
  - 2.4.1
before_install: gem install bundler -v 1.10.6
cache: bundler

Add some ruby versions for ci
Add some ruby versions for ci
