Use /usr/bin/env, test for py33 and how to release in README.
diff --git a/updatezinfo.py b/updatezinfo.py
index 46b3cf7..627231a 100755
--- a/updatezinfo.py
+++ b/updatezinfo.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 import os
 import re
 import sys