Feature/gulp implementation

@stripthis @jlalovi 

I have implemented the following changes in this feature branch:

*Replace grunt with gulp > mainly for speed of compilation but also the syntax is easier
* Upgrade tot compass v1.0 and Sass 3.3, this makes it possible to use useful new functions of sass 3.3

You should be able to get this working by reading the readme file in the styleguide folder.