Add url generator

I think this could be pretty cool, has a lower barrier to entry for someone who's foreign to the idea of browserify(cdn), like how I ~~used to be~~ am.

![cdn](https://f.cloud.github.com/assets/1153134/1609115/28a01ce8-552f-11e3-8bd6-8a6e871eed56.gif)

Submit form will open a new window with the generated url. 

Yeah????? Pardon my JavaScript. /cc @maxogden cause I bothered you about this