github/linguist — pull request #406 by awwx (2013-02-25 14:34:07+00:00)
Title: Add .litcoffee as a Markdown extension

Ref http://coffeescript.org/#literate

CoffeeScript as of version 1.5.0 uses the ".litcoffee" extension
for Literate CoffeeScript: CoffeeScript programs written in Markdown.