krisbulman/retina-sprite-mapper — pull request #2 by krismeister (2013-05-03 01:29:57+00:00)
Title: added :before example

I added an example of using the `:before` pseudo. It pretty handy for background placement with sprites.

Ironically, I am having this issue https://github.com/krisbulman/retina-sprite-mapper/issues/1 with my general output. but using `@include retina-sprite-item()` mixin works fine.