setup: use version as tag name in download url

LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2016 Fabian Peter Hammerle
+Copyright (c) 2017 Fabian Peter Hammerle
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

setup.py

@@ -2,14 +2,16 @@ from setuptools import setup
 
 import glob
 
+version = '0.1'
+
 setup(
     name = '',
-    version = '0.1',
+    version = version,
     description = '',
     author = 'Fabian Peter Hammerle',
     author_email = 'fabian.hammerle@gmail.com',
     url = 'https://github.com/fphammerle/',
-    download_url = 'https://github.com/fphammerle//tarball/0.1',
+    download_url = 'https://github.com/fphammerle//tarball/{}'.format(version),
     keywords = [],
     classifiers = [],
     scripts = glob.glob('scripts/*'),