SVM implemented

Currently running on small subset of training data, approx 3000. More feature engineering needed (spell check, stemming, lemmatization). Current accuracy 80%
This might be better placed in either another file or in a if __name__ == "__main__": ... at the end of the file. At first I thought it was a unit test, and then I wondered if it was actually a functional part of your pull request, and eventually I realized it was a manual test that one might run one-off.