Everything works

10 fold validation works completely in generateNB and testNB.

Accuracies are as expected and match that of other programs and what is
posted to the forum, ~80percent on each file.

Next is to allow a toggle to use the programs for 10 folds or for "1
fold", so a user can opt to use the programs over a directory pre-split
for N-folds.

I could also write a control program that executed N folds for any given
N, and do some more extra credit, but this is sufficient for the
assignment at the moment.