language: ruby
rvm:
  - 2.5.3
  - 2.4.5
  - 2.3.8

language: ruby
rvm:
  - 2.6.0
  - 2.5.3
  - 2.4.5
  - 2.3.8

Support ruby 2.6.0 (test ruby 2.6.0 on Travis CI)
Support ruby 2.6.0 (test ruby 2.6.0 on Travis CI)
