minor fixes in docs
Use README.rst directly in setup.py
Improve setup.py, add pypi classifiers

The command 'python setup.py test' now executes tox and the tests.
Improrove pep8 config and fix pep8 errors in bin/
Load deps from requirements.txt
Add python3 compatibility
Add python3 compatibility imports
Added 2 basic unit tests
Added more unit tests