bump coffee-script

Version 1.7.x of CoffeeScript requires that you register it before requiring .coffee files in node.

```
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.
```

So, I have added the register method to the initialize method of support code loading and the error described in #153 goes away.