language: ruby
rvm:
- 2.0
- 2.1
- 2.2
- 2.3.4
- 2.4.1
- ruby-head
before_install:
- gem install bundler -v '~> 1.10'
script: "bundle exec rake"
notifications:
  email: false

language: ruby
rvm:
- 2.3.4
- 2.4.1
- ruby-head
before_install:
- gem install bundler -v '~> 1.10'
script: "bundle exec rake"
notifications:
  email: false

Remove ruby versions older than 2.3.0
Remove ruby versions older than 2.3.0
