mxcl/homebrew — pull request #8106 by mistydemeo (2011-10-14 03:01:21+00:00)
Title: Add Xcode to the blacklist

Add Xcode to the blacklist, with instructions on where to get it and how to install.

A friend of mine was installing Homebrew for the first time, and I noticed that when she got the message `Warning: Xcode is not installed! Builds may fail!` she assumed (reasonably enough) that she was supposed to `brew install xcode`. Hopefully this steers a few new users in the right direction.