[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 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...