Updated for python3

Added python3 support, updated pandas calls to use updated sort_values function, squashed print statements in verbose option

Added demo script and sample articles

Simplified code a bit (actually, committing some really old changes before pushing to github)

Dumpbed name==main

Swapped out countvectorizer+tfidftransfom for tfidfvectorizer

Some small changes, main change was simplifying how similarity matrix is calculated. Looks like there was previously something wrong here.

Changed how tfidf transformation is performed, added optional wordnet lemmatizer template code

Root commit