Removed tar.gz file

For some reason warehouse (new Pypi package) has changed to only
allow one sdist per release. This absurdly breaks setuptools.
I have chosen to remove the tar.gz in favor of the zip file. Unix
can use zip; it is a lot harder to use tar.gz for Windows users.

Sorry.

Author: rlabbe

pypi-install.sh

@@ -1,3 +1,3 @@
-python setup.py sdist --formats=gztar,zip
-#python setup.py register -r pypi
-#twine upload dist/* -r pypi
+python setup.py sdist --formats=zip
+python setup.py register -r pypi
+twine upload dist/* -r pypi