Add code to make wheels

Makefile

@@ -44,6 +44,9 @@ doc-latexpdf:
 publish: sdist
 	python setup.py register sdist upload
 
+publish_wheel: sdist
+	python setup.py bdist_wheel upload
+
 test:
 	python -m unittest feedgen.tests.test_feed
 	python -m unittest feedgen.tests.test_entry

setup.cfg

@@ -0,0 +1,2 @@
+[bdist_wheel]
+universal=1

setup.py

@@ -1,6 +1,7 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 
+import setuptools
 from distutils.core import setup
 import feedgen.version