rvm:
  - 1.8.7
  - 1.9.2
  - ree
  - rbx
  - jruby
  - rbx-head

rvm:
  - 1.8.7
  - 1.9.2
  - 1.9.3
  - ruby-head
  - ree
  - jruby
  - rbx
  - rbx-2.0

Add rbx-2.0, mri-1.9.3 and mri-1.9.4 to Gemfile
Add rbx-2.0, mri-1.9.3 and mri-1.9.4 to Gemfile