Ensuring all ZenPacks are labeled as being GPLv2 or later

COPYRIGHT.txt

@@ -0,0 +1,17 @@
+# Copyright (C) 2011,2012, Zenoss, Inc.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 2 or (at your
+# option) any later version as published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
+# USA.
+#
+# For complete information please visit: http://www.zenoss.com/oss/