0.2.7
v 0.2.7 (2016_01_17) : fixed a critical bug
o modified main() so that this function doesn't have any argument,
allowing the setup.py to define a valid entry-point in the
program. Added a warning in main() so that this error does not
occur anymore.
o 6 tests, pylint=10.0 for the three Python scripts
o version packaged and sent to Pypi (https://pypi.python.org/pypi/Katal)