Adding 'jQuery' 2.0.0.

Straight from the official download links found at

http://blog.jquery.com/2013/04/18/jquery-2-0-released/.

[![Build Status](https://travis-ci.org/bmcustodio/cdnjs.png?branch=jquery-2.0.0)](https://travis-ci.org/bmcustodio/cdnjs)