Add release script
add necessary gitignore entries

This will allow us to build packages without worrying about build artifacts
remove AUTHORS file
Move LICENSE to LICENSE.txt
Add missing MANIFEST.in
Combine README.nd and README.rst
Add empty requirements.txt

Many build/ci tools will see this and assume a python repository
Cleanup setup.py
Merge pull request #33 from NFicano/pypi-release

Pypi release