Create Initial Sphinx Documentation

I was home sick today from work so I decided to be productive. The site is live at:
http://blink1073.github.io/atom/docs/

I have a gh-pages branch, if you'd like to create one that I can pull against.

I started with the enaml docs, and stripped out the non-relevant parts.  For the example doc generation, this time we include the download, the docstring, the literal include, and any output.

No formatting issues this time :).