Proposal for set-up.

Hi Ruben,

I had difficulties getting KafNafParserPy to work. README.md said that you had to put the statement
"from KafNafParserPy import *" in your script. However, script "test.py" includes the statement "from KafNafParserMod import *. 

I have made a fork in which I placed the packages in subdirectory KafNafParserMod. Furthermore  I included a setup script to enable installing the packages in your computer and modified README.md accordingly.

If you think this is a good idea, would you please pull these changes?

Thanks
Paul Huygen