closes #1 initial checkin

Oh yeah, its not gonna work.  Its iterating over wordRows, which is a list when updating counts.  That was intentional so that it would handle the case of words that do not exist in the counts map. However, I didn't think of the case of a doc w/ the same word multiple times.  I think it will try to set the word multiple times with `count+1` and I think this will fail with an AlreadySetException.   What do you think about calling this problem out in a comment and leaving it as another excercise to the reader?