Merge pull request #2 from amagitte/7XYWithMiniAOD_Alessio

Isolation Cut for Cut Based Analysis
Merge pull request #3 from amagitte/7XYWithMiniAOD_Alessio

Cut Based Identification for Muon and Electron
fix
merge recent changed to computeLimit
move Id and Iso functions in a common util file
add raw events to the eventflow
fix photon prescale & add more MC processes
Code To Estimate the Efficency