Update python_requires and add to sys.path for embedded python pip install
This fixes the sys.path issue described in #1 (closed) and addresses the concern in #2 (closed) as well. I set python_requires
so that it matches openpyxl.
I'm new to the mercurial/heptapod workflow, so hopefully this is branched from and pointing to the correct branch.
Edited by Kyle Huston