Updated README.md and Documentation/config.txt file

Signed-off-by: CharlesJB <Charles.Joly-Beauparlant@crchul.ulaval.ca>
init: Updated the Usage and file check

Signed-off-by: CharlesJB <Charles.Joly-Beauparlant@crchul.ulaval.ca>
Changed generateXML.py to generateVennXML.py

Signed-off-by: CharlesJB <Charles.Joly-Beauparlant@crchul.ulaval.ca>