kaelig/hidpi — pull request #2 by lucho870601 (2013-02-12 15:40:41+00:00)
Title: Added few more mixins

- One mixin to build retina sprites easily.
- Two decorators of `hidpi` to add css width/height to the element containing the background image.

I am not that experienced with `SASS` so forgive me if there is a better way to do these things.