Homebrew/homebrew — pull request #29598 by thmttch (2014-05-26 19:27:01+00:00)
Title: upgrade drake from release 1.5 to 1.6

A [new release of Drake](https://github.com/Factual/drake/releases/tag/v0.1.6) was cut recently. This upgrades the drake formula to pull the newest release.