Make compatible with CoffeeScript >= 1.7.0

"When requiring CoffeeScript files in Node you must now explicitly register the compiler. This can be done with require 'coffee-script/register' or CoffeeScript.register(). Also for configuration such as Mocha's, use coffee-script/register." - http://coffeescript.org/#changelog
Merge pull request #2 from AlexBezuska/master

Make compatible with CoffeeScript >= 1.7.0