language: ruby
rvm:
  - ree-1.8.6
  - 1.9.1
  - 2.4.2
  - jruby

language: ruby
rvm:
  - ree-1.8.7-2011.12
  - 1.9.3-p551
  - 2.4.2
  - jruby-head

Use versions that Travis knows of
Use versions that Travis knows of