renaming wordnet mask functions, and completing mask generation function
removed obsolete pipeline code from classifier.py
empirical gaussian refactored to work for sparse matrices
refactored gauss_classifier to avoid repeated looping code & compatible with sparse matrices too
debug
moved path classifier into classifier & completed
minor bugfix: numpy imported as np
refactored GaussClassifier and GaussPathClassifier into a separate file
updated test scripts
Merge branch 'master' of https://github.com/samwhitehall/trendminer-reuters-classification

README added on github