About page

Adds a new /about page with technology, code, credits, publications, and contact information.
Former /about page is now at /info

Fixes #191 


It's just an artifact of when the controllers were generated, but the diff makes it confusing.

This file `info.js.coffee` was actually created in 2013 as `about.js.coffee`. At the time, rails was printing the URL as http://jashkenas.github.com/coffee-script/.

Today I renamed the `about` controller to `info`. Then I created a new `about` controller. Rails now uses the http://coffeescript.org URL, so it looks like I edited `about.js.coffee` when technically I didn't.