Create setup.py from cython-setup
Add dependency on argparse and ordereddict for python < 2.7 to setup.py
Update author and description, add classifiers, email, url
Use setuptools instead of distutils
Require common dependencies that are installable from PyPi
Make Cython dependency optional and fall back to compiled .c file
Merge pull request #127 from OP2/add-setup.py

Add setup.py