Jsdoc (ready)

Do we want to use this?
Seems like a good starting point, we can customize as needed.

I committed the raw markdown for now, but we can render to json and customize later.

- Using [lexicon](https://github.com/englishtown/lexicon) parser.
- Using [lexicon-grunt](https://github.com/englishtown/grunt-lexicon) grunt task.
- It lacks documentation but works right out of the box.
- Can render in `html`, `json`, or `markdown`


Only other viable option is [dox](https://github.com/visionmedia/dox) but @jverghese said he used it before and had issues.