Added Syntax Highlight using highlight.js. Set highlight style to vs.css

Added code syntax highlight using highlight.js script.
![screen shot 2014-09-06 at 10 03 17 pm](https://cloud.githubusercontent.com/assets/429042/4177603/5f01d05c-364c-11e4-98e3-85484174147a.png)

The picture shows how it looks in action.