mxcl/homebrew — pull request #19661 by dlh (2013-05-07 18:09:06+00:00)
Title: Fix GitHub API usage

[GitHub API v3 documentation](http://developer.github.com/v3/#user-agent-required):

> All API requests MUST include a valid User Agent string. Requests with no User Agent string will be rejected. If you are hitting the API without authentication, we ask that you add some kind of identification to the UA header value. This is so we can contact you if there are problems.