before_install:
  - gem install bundler
language: ruby
rvm:
  - 2.2.1
script: bundle exec rspec spec

language: ruby

before_install:
  - gem install bundler

rvm:
  - 2.2
  - 2.3
  - 2.4
  - 2.5
  - ruby-head

matrix:
  allow_failures:
    - rvm: ruby-head

script: bundle exec rspec spec

cache: bundler

Add ruby versions to test against in the TravisCI configuration
Add ruby versions to test against in the TravisCI configuration
