Make Chef converge

This PR gets the cookbook to a converge-able state.

* Configuration renders correctly
  - RabbitMQ still restarts after the run with the config given
  - TODO is to populate the config with all the defaults, possibly
  - TODO also, make it prettier
* Installation works
* Compilation errors have been eliminated
* The README reflects the addition of `rabbitmq_exchange`, `rabbitmq_binding`, and `rabbitmq_queue`