added copyright notices in files missing them

bindings/python/simple_client.py

@@ -1,4 +1,8 @@
-#!/usr/bin/python
+#!/bin/python
+# Copyright Arvid Norberg 2008. Use, modification and distribution is
+# subject to the Boost Software License, Version 1.0. (See accompanying
+# file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
 
 import libtorrent as lt
 import time