gittip/www.gittip.com — pull request #2070 by patcon (2014-02-23 04:07:59+00:00)
Title: Add slugignore file

Heroku allows for a slugignore file to help keep the compiled slug as small as possible:
https://devcenter.heroku.com/articles/slug-compiler#ignoring-files-with-slugignore

Supposedly this speeds up deploy and dyno scaling.