Update mgPostProcv2.py

Fix the kinematics of b/c partons that do not match the default values and are not part of resonance decays.
Update mgPostProcv2.py

Fix the kinematics of b/c partons that do not match the default values and are not part of resonance decays.
Merge branch 'master' of github.com:smrenna/genproductions
Merge pull request #61 from smrenna/master

post-processing of MadGraph files before matching:  b/c parton kinematics