-python/runpy.sh pp=oints to python from "/System/Library/Frameworks/Python.framework/Versions/2.7/bin/python"
-change in the parameters of Hog::computeBlock, it accepts an AngleHistogram template and returns descriptors in a  FloatVec
--HogOutput manager serialization of the parameters to a text file
--preprpcessImages.py accepts an argument, 'g' processes the good folder, 'b' the bad folder and 'c' the cross validation folder
--preprocessing only includes resizing and gamma correction
--AngleHistogram copy constructor added
--Hog::computeBlock now includes the option for L2 normalization
--Hog::computeBock now calls Hog::computeCell to calculate cell level descriptors
--In Hog::computeCell, if gaussianWeighting  is used, use the weights relative to the entire  block, rather than to the cell.
--introducing samples/hog/run.py to do the learning of samples and realtime processing iof input video