Added transform-style mixin
added retina-image mixin
Added optional retina-filename
Added asset-pipeline support for rails
Adding stylesheets path to Sass.load_paths

Adding the stylesheets path to Sass' load_paths allows non Rails
apps to use the assets bundled with the gem directly, instead of
copying them manually into each projects, and manually updating
them.
fixing a math error in the documentation about flex-grid
Replaced media-query with hidpi mixin
Removed image-height and width in favor of background-size variable
dont impose 2x naming for custom retina-filenames
added retina-image mixin
Added optional retina-filename
Added asset-pipeline support for rails
Prefixer can have prefixes enabled or disabled
Added keyframes mixin that prevents redundant prefixes in its contents
Replaced media-query with hidpi mixin
Removed image-height and width in favor of background-size variable
dont impose 2x naming for custom retina-filenames
Make prefixer and keyframes mixins more concise
Merge pull request #161 from ysbaddaden/master

Adding stylesheets path to Sass.load_paths for non Rails apps
Merge pull request #162 from Emerson/flex-grid-readme-update

fixing a math error in the documentation about flex-grid