language: ruby
bundler_args: --without=development
rvm:
  - 1.9.3

language: ruby
bundler_args: --without=development
rvm:
  - 1.9.3
  - 2.0.0

Add Ruby 2.0.0 to Travis's build matrix
Add Ruby 2.0.0 to Travis's build matrix

Vagrant 1.4 will ship with Ruby 2.0, so let's run unit tests against it,
too.
