[minor] added faq page, additional links

In reference to #10, added a basic faq page, and some additional links on the main page.

Also added the image from the github group, this of course is still in [discussion over on iojs/io.js](https://github.com/iojs/io.js/issues/37) and can change if/when there is a concensus over there. I could also put in some javyscript to dynamically change it to one that was posted on that thread... that'd be kinda cool...

EDIT: added ref to logo discussion