first commit
EvaluationWithNominal.py cleaned up a little
weights of nominal attributes are all set to zero.
Have to ask Sutanu Sir how to update the weights of nominal attributes.
Refined evaluationWithNominal.py; added the "neutralDirectionEnabled"
button. Revised the 'critiqueStr' function a bit so it would provide
more readable critique strings.
Diversity of critiques debugged and sped up with pre-computation