Call setup.py with python3.

diff --git a/setup.py b/setup.py
index a3f45d2..85a07ae 100755 (executable)
--- a/setup.py
+++ b/setup.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/python3
 
 from distutils.core import setup, Extension