Add Famo.us Implementation

Finally it has arrived, a PropertyCross implementation using the [Famo.us](http://famo.us) framework.

I have included screenshots of this for iOS 7, Windows Phone 8 and Android: https://github.com/matthewdunsdon/PropertyCross-Site/commit/b3e36174

Closes #274
This is a great summary of what famous is, but I'd really like to know a little more about the PropertyCross implementation.

You mentioned that you had to create some framework elements yourself. What where they? How much of this is famous code vs. your own? Does famous do the animation / page transitions / bouncy scrolling?

It looks like famous apps don't use HTML? I think that is an important observation to make.