added some install comments in common
resolved conflict in notebook
UP: handle sparse scipy matrices in wrap
UP: Got basic prediction working with tests
UP: Added a better error message
TEST: all new tokens and predict
UP: Added TokenError and tests
DOC:  Improved error message
UP: Improved comments
ENH: Added tab delimiter options to row_filter
conflict res
conflict res
conf res
res conflict
UP: Started groupby_reduce
removed predict_old from vw_helpers
Merge pull request #6 from columbia-applied-data-science/interviews

Interviews
merging
removed old dependencies
new version # in setup