Added styl, jade, groovy and gsp support

I love the docker project and used it to generate some docks on our projects.  We use groovy, gsps, jade, and stylus so I modified docker to work with them.

Jade definitely has some issues, and I had to introduce a pygment: element because pygments does not know what .styl files are (its similar to sass in formatting).

Cool project!
-Mikkel