assignment due 8/4, 1NN. Comments are in the file.

Again, thanks very much for looking at this so carefully.  I spent a lot of time searching for data sets related to sensor capture of human behavior, as I'm thinking of focusing on that for my project.  Ugulino has been terrific, getting me the data set with the features, and then corresponding with me about this type of research.  So your feedback is most welcome!