Added autojump formula.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

Formula/autojump.rb

@@ -0,0 +1,26 @@
+require 'formula'
+
+class Autojump <Formula
+  url 'http://github.com/downloads/joelthelion/autojump/autojump_v12.tar.gz'
+  homepage 'http://github.com/joelthelion/autojump/wiki'
+  md5 'b12ec5909afef86016d0e9ce7c834071'
+  version '12'
+
+  def caveats; <<-EOS
+Add the following lines to your ~/.bash_profile file:
+if [ -f `brew --prefix`/etc/autojump ]; then
+  . `brew --prefix`/etc/autojump
+fi
+    EOS
+  end
+
+  def install
+    bin.install "autojump"
+    man1.install "autojump.1"
+    (prefix+'etc').install ["autojump.bash", "autojump.zsh"]
+    inreplace "autojump.sh" do |s|
+      s.gsub! '/etc/profile.d/', (prefix+'etc/')
+    end
+    (prefix+'etc').install "autojump.sh" => "autojump"
+  end
+end