Merge pull request #561 from Unrud/patch-4

Use python3 in shebang (setup.py)

setup.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 #
 # This file is part of Radicale Server - Calendar Server
 # Copyright © 2009-2016 Guillaume Ayoub