testing global options for retina enable/disable feature also comma separated images loading path.
testing global options for retina enable/disable feature also comma
separated images loading path.
version update
remove comma-separated classes via @_extend

sass 3.3.0 has deprecated support for @extend within any @_directives
there is a way to use DRY to generate comma-separated classes.

testing, code doesn’t compile.
readme update
implementing global setting for retina images

removed testing code for comma-separated classes, leaving it for now as
it requires further code investigation
moved sprite mapping inside @directive
added TODO's, removed testing @if directives for comma separated images.
added retina size and position feature so retina folder can contain completely different size images.
testing comma separated @mixins
sprite helper improvements
Merge pull request #7 from paulgabronis/dev

Dev