language: ruby
rvm:
  - 2.1.0
  - 2.4.0
script:
  - bundle exec rspec
services:
  - redis-server

language: ruby
rvm:
  - 2.1.0
  - 2.4.0
  - 2.5.0
  - 2.6.0
script:
  - bundle exec rspec
services:
  - redis-server

Add ruby 2.5 and 2.6 ci tests
Add ruby 2.5 and 2.6 ci tests