dvdln/rework-breakpoints — pull request #1 by dvdln (2013-12-23 19:15:36+00:00)
Title: Update breakpoints.js

[CSS variable names must always be prefixed with "var-"](https://developer.mozilla.org/en-US/docs/Web/CSS/Using_CSS_variables#What_are_CSS_Variables). I left in backwards-compatibility with the old naming convention, but I would suggest you consider removing it.