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

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

Test against ruby-head (currently 1.9.3dev)
Test against ruby-head (currently 1.9.3dev)
