added required dependency
added helper funtion to find a certain decay chain in MC
added helper funtion to find a certain decay chain in MC
added WJets sample from Josh
added information if the MC process is Ztautau
added 2012B_22Jan2013
Merge pull request #186 from mverzett/weightloss

MET Phi fix, feature to find original MC process, datadefs
Merge pull request #185 from lgray/master

Changes for photon parentage tracking and ability to move between sites