language: ruby
before_install:
  - gem update --system
  - gem update bundler
bundler_args: --without=extras
script: rspec spec
sudo: false
rvm:
  - '2.1.10'
  - '2.2.6'
  - '2.3.3'
  - '2.4.0'
  - jruby-9.1.6.0
  # - rbx-2
  ### ALLOWED FAILURES ###
  # see how compatible we are with dev versions, but do not fail the build
  - ruby-head
  - jruby-head
matrix:
  allow_failures:
    - rvm: ruby-head
    - rvm: jruby-head