language: ruby
rvm:
  - 2.1.9
  - 2.2.5
  - 2.3.1
  - 2.4.1
  - ruby-head
before_install: gem install bundler
matrix:
  allow_failures:
    - rvm: ruby-head

language: ruby
rvm:
  - 2.3.1
  - 2.4.1
  - ruby-head
before_install: gem install bundler
matrix:
  allow_failures:
    - rvm: ruby-head

Drop support for Ruby 2.2 and lower
Drop support for Ruby 2.2 and lower

Bundler doesn't support these anymore.
