mxcl/homebrew — pull request #20965 by pmorton (2013-07-02 18:20:04+00:00)
Title: Add packer

Packer is a tool used to build base virtual machines. It is relatively new but has tremendous traction in the vagrant community. I would like a simple uniform way to get moving with the tool. I have added both the binary build and the source build.

```brew install packer --HEAD``` will get you the source build, otherwise you will get the binary build.

/CC @mitchellh