add a requirejs example of using nap

I added the simplest possible example of using the library in the context of RequireJS. I figured that coupling it to a particular standard made little sense for now so opted to just add an example for people to get started. 

A few points came up now I'm more familiar with the library and might be worth having a think about...

* Do we need both a lib and components directory? Any reason not just to specify a few more bower dependencies?
* Should we check in the components directory? We're already doing this with lib but it might be because these libraries aren't core to nap.