Friday code fun

This was a bit painful. It wasn't easy finding how to get Hubot to play a sound in Campfire :-1: :cry:. However, a patch is now in place. But...the current version of Hubot is out of date and there are new classes that would provide a better patch.

After merging this and upgrading Hubot, revise and re-patch :package: 

This also closes #31