Building for upload to PyPi

Dependencies:

setuptools
twine
wheel

edit the `~/.pypirc` file:

    [distutils]
    index-servers = pypi

    [pypi]
    repository = https://pypi.python.org/pypi
    username = <username>

Then execute:

$ python setup.py sdist
$ python setup.py bdist
$ python setup.py bdist_wheel
$ twine upload dist/*

Repeat for other versions w/ bdist and twine upload dist/<fn of wheel>