And to trigger travis to build and work ...

More to come, especially when it's about strings

There is more work to do though, as many imports are still incorrect.
Also, there are still print statements

Conflicts:
	README.md
	requirements.txt
	setup.py

tox https://pypi.python.org/pypi/tox is a thin wrapper around virtualenv
which let you craft a fresh python environement to execute command in.

It creates the env with virtualenv, install dependencies, run python
setup.py install in it and then execute whatever command you want it to
do and report status.

To do so I simply:

- listed tests dependencies in test-requirements.txt (which are just
  nose and mock)
- provide a tox.ini file which describe how to install the dependencies
  and execute nosetests
- added the module 'coverage' to the list of test dependencies

To run tests simply:

 pip install tox && tox

That will execute the test command 'nosetests' using python2.6 and then
python 2.7.

The additional env 'cover' can be run using: tox -ecover.

More and more packages are listing their dependencies in
requirements.txt which make it trivial to maintain and install them.