SASS support

[juliomenendez]

Hi,

I created a fork with support for SASS, including Bootstrap SASS and grunt watch to compile it all when the files change.

I looked at the fork mentioned in #14 and it seems is no longer active and a year old so I went ahead and did mine here https://github.com/julio-menendez/django-sass-project.

I'm planning in making another one from there with rest-framework and AngularJS integrated. We use all that on our projects but seemed more usable to have one fork with just SASS and another one with all 3 (SASS, AngularJS and rest-framework).

Just letting you know in case someone needs it too.