language: ruby
rvm:
  - 2.4
  - 2.3
  - 2.2
  - 2.1
env:
  - TRAVIS=true
before_install: gem install bundler -v 1.15.4

language: ruby
rvm:
  - 2.5
  - 2.4
  - 2.3
  - 2.2
  - 2.1
env:
  - TRAVIS=true
before_install: gem install bundler -v 1.15.4

Add ruby 2.5 to CI
Add ruby 2.5 to CI
