patch to homebrew #1

gistfile1.txt

$ git show 558d2a4732e594656fe11993259ffc8287eb5c25
commit 558d2a4732e594656fe11993259ffc8287eb5c25
Author: netoneko <[email protected]>
Date:   Wed Mar 9 02:29:37 2011 +0500

    works with standalone ruby

diff --git a/Library/Homebrew/system_command.rb b/Library/Homebrew/system_command.rb
index cb6e6a8..702521c 100644
--- a/Library/Homebrew/system_command.rb
+++ b/Library/Homebrew/system_command.rb
@@ -75,4 +75,8 @@ module Homebrew
     end
 
   end
+
+  def ruby
+    'ruby'
+  end
 end