Create a proper package.

- Add GPL license (murasyp uses pycddlib)
- Extensive README, using text from about.rst.
- Set a valid version according to http://www.python.org/dev/peps/pep-0440/
- Add setup script.
- Add requirements.
Remove static path to prevent Sphinx warning.
Fix copyright statement in setup script.
Add manifest for source distribution.
Merge pull request #1 from mcmtroffaes/feature/setup-script

Add setup script.