0.0.3 - Increase parameters directly covered by the wrapped

Adds search, highlight and explain functions to cover parameters from the [Sunlight Fondation](http://sunlightlabs.github.com/congress/index.html) docs.

Adds next function to allow for easier stepping through pages.

Adds search validation on endpoints ending in /search.

Splits main.js into three files.

* main.js: binds all the parts together and creates the endpoint modules.
* core.js is the the module all the endpoint modules inherit from.
* extend.js is the jquery.extend port in its own file.