Temporary function for fixing the PFParticles bug in ntuplizer tag cms538_v*
Jet: added PUJetId
Vertex: added nTracks
SimpleEvent: genMet is now met_genMetTrue instead of hand-calculated value from genParticles list
General: enabled standalone compilation (without CMSSW) - suitable if you are only working with mini-ntuples
Adding genDecaySkim
updating documentation