Adds the option for character features over word features. Can specify number of characters per feature
Adds help to the parser
Adds the option to not shuffle the train/test set for that run
added nltk code
added lemmatization with POS tagging, stemming
Update README.md
Merge pull request #2 from rtal/character-features

Character features
updated readme
fixed feature extractor and logistic regression
Merge pull request #1 from rtal/lemmatization

Lemmatization
merge naive bayes feature extractor
Merge branch 'master' of https://github.com/rtal/reddit-classifier into naivebayes