nochmal paar änderngen

maze.py

@@ -1,3 +1,13 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""
+Author: Leo Vidarte <http://nerdlabs.com.ar>
+This is free software,
+you can redistribute it and/or modify it
+under the terms of the GPL version 3
+as published by the Free Software Foundation.
+"""
 
 import random
 import Tkinter as tk