Add eCommerce support

This PR does a few things:

* Adds eCommerce support (Fixes #17).  Specifically for WooCommerce and WP eCommerce.
* Prefixes filter names, functions names (and much else) with Segment, rather than Segment_IO
* Adds a fully baked page() method.
* Adds a class to help with client-side handling of server-side events.
* Features Bob Ross quotes in commit messages.
The user can set their display name to be any combination of First, Last, First Last, Last First, User Login - that's a preference that they can adjust.

http://cl.ly/image/3Z3m0J3A1I1T