D3-powered Stately map

+ main.js, main.mini.js: script to use D3 with Stately
+ _screen.scss: library version of screen.scss for scalablitly
* _customization.scss, _setup.scss, stately.scss. In this branch, screen.scss is not used. 
* README.MD: documentation about this D3 enhancement added
+ stately-d3.html: demo file for this enhancement

A blog post about it with slightly more detail
http://www.cyhung.net/2013/07/10/d3-powered-stately-map/