Make it more uap-js

I add some files to make this repository more common, and prepare your future work :smile: 

About test, a way to fetch yaml(s) have to be find.
Maybe a clone in the `.travis.yml`?...
(This is true for every implementation)

Also, it seems to be the JavaScript implementation of UA-Parser, so I think it will be clearer to rename it to `uap-js`.