emberjs/website — pull request #1873 by tricknotes (2014-12-13 07:02:10+00:00)
Title: Fix `rake preview` following API update for `listen` gem

This breaking API change is injected in 98ff9a81 .
Oops, this is my mistake.
I'm ashamed as my bad.

Fix https://github.com/emberjs/website/issues/1859