twolfson/json2css — pull request #33 by elmccd (2014-09-17 11:42:47+00:00)
Title: Support for retina displays

Display icon two times smaller, but with two times bigger pixel ratio.
```css
.icon
sprite($icon)
@media (min-device-pixel-ratio: 2)
spriteRetina($icon2xBigger)
``

Need reproduction to other preprocessors files.