added template files for Prism

Hi Chris,
Really enjoy your building tool; it's awesome.
Made some template files for [Prism](http://prismjs.com/), and a [demo-page](http://atelierbram.github.io/syntax-highlighting/prism).
You can do with it what you want, and if there is anything that you would like to see changed, just let me know. 

[Bram de Haan](http://atelierbramdehaan.nl)