thoughtbot/bourbon — pull request #582 by thachnn (2014-11-15 15:39:44+00:00)
Title: Make _render-gradients and _flex-box become compilable with sass-compiler libraries

- _flex-box.scss : @elseif is not standard syntax, it should be @else if
- _render-gradients.scss : should use quote string to concat strings and variables, if not, the sass-compiler will return like "-webkit-linear -gradient(..)"