language: ruby
cache: bundler
dist: trusty
sudo: false
rvm:
  - 2.2.7
  - 2.3.4
  - 2.4.1
  - ruby-head
  
matrix:
  allow_failures:
    - rvm: ruby-head

branches:
  only:
  - master
notifications:
  slack:
    on_success: change
    on_failure: always
    rooms:
      secure: ml+Ph8FuoU4TgEqGmjERaF5peoNTRhllG5rBFDUgGxPCKRxE9snYDwc+29RAhA7izlaUABIA3fWT11SdF2RMTUorsrz0PbYtyBZuI9AKloww1CUFMl2kr8+DRt/AzMcGYs8OgQW12NLNNRV72X4wUKsJXpazVHsXctU/Fh/AqX0=