github/linguist — pull request #1435 by maor (2014-08-02 23:25:40+00:00)
Title: Excluding Grunt config files

I've noticed a few cases where there are some GitHub projects that are everything but JS, but because they use Grunt then GitHub marks the project as JS. I think this can be useful.

Not sure if I made the change in the best location, but I hope my point is made : )