https://pypi.python.org/packages/source/c/certifi/certifi-2015.04.28.tar.gz#md5=12c7c3a063b2ff97a0f8291d8de41e8c
https://pypi.python.org/packages/source/w/wincertstore/wincertstore-0.2.zip#md5=ae728f2f007185648d0c7a8679b361e2