Converted to Coffeescript and updated to jquery 1.9.1

Hey, I'm going to be including this in [GroundworkCSS](https://github.com/groundworkcss/groundwork) and most likely adding some features and functionality so I've converted the source to Coffeescript (via automated conversion with [js2coffee.org](http://js2coffee.org/)

Also updated it to use jQuery 1.9.1.

 - Gary