Added a basic index.html starter.
Ignore gemfiles for local Jekyll.
Added bootstrap doc.js.
Added basic site styles.
Header, Footer and navbar now includes.

Demonstrating Jekyll includes to provide standard header, footer
and navbar.
Added data driven menu.

This is really to demonstrate the ease of data inclusion via
Jekyll. It's not meant to be a solid navbar implementation, and
it isn't.
Added templated starter pages.