KNN now has 3 evaluations: perfect classification, at least one topics
classified correctly, and percentage of topics that was misclassified.
Merge branch 'master' of https://github.com/maniarathi/datamininglabs

Conflicts:
	5243hw2/bin/KNNPrediction.class
	5243hw2/src/KNNPrediction.java

added additional evaluations for KNN