root/pypi: links for sn-edx-middleware

root/pypi sn-edx-middleware-0.0.4.tar.gz
root/pypi sn-edx-middleware-0.0.3.tar.gz
root/pypi sn-edx-middleware-0.0.2.tar.gz
root/pypi sn-edx-middleware-0.0.1.tar.gz