Merge pull request #18 from ttbarMET-at-IPHC/master

Fixing and propagating the effect of the Z veto fix to the background prediction
Adding modified cuts to signalRegionDefinitions.h
Adding modified cuts to signalRegionDefinitions.h
update
Merge remote-tracking branch 'upstream/master'
adding stopCrossSections.h from Alex
adding stopCrossSections.h from Alex
Refactorized the signal region definitions for both BDT and cut and count, now handled by a structure. One should call loadBDTSignalRegions() and loadCnCSignalRegions() at beginning of code before accessing the maps.
Merge remote-tracking branch 'upstream/master'