included stock regression

included parkinson regression

Merge branch 'master' of https://github.com/jgoerner/ml-homework

comparison least-squares, fisher, perceptron

Create README.md

implemented perceptron

cleaned utils.py

documented knn.py

documented linear_models.py

included better threshold finding for fisher

added simple fisher discriminant

wrapped least squares regressor

increased documentation coverage

fixed label inarizer for two labels

implemented 2 class problem