Copyright and licensing info to keepassx2pass script

contrib/keepassx2pass.py

 #! /usr/bin/env python
 
+# (C) Copyright 2012 Juhamatti Niemelä <iiska@iki.fi>. All Rights
+# Reserved. This file is licensed under the GPLv2+. Please see COPYING
+# for more information.
+
 import sys
 
 from subprocess import Popen, PIPE