Update copyright information on ubuntu-setup.bash

Adding Diaspora Inc. copyright and reference to the AGPL and noting that
Mackenzie Morgan (maco) and I have made contributions to the file.

Signed-off-by: Daniel Thomas <drt24@srcf.ucam.org>

ubuntu-setup.bash

 #!/bin/bash
 # Author : hemanth.hm@gmail.com
 # Site : www.h3manth.com
+# Contributions from: Mackenzie Morgan (maco) and Daniel Thomas (drt24)
 # This script helps to setup diaspora.
+#
+#   Copyright (c) 2010, Diaspora Inc.  This file is
+#   licensed under the Affero General Public License version 3.  See
+#   the COPYRIGHT file.
+
 
 # Set extented globbing 
 shopt -s extglob