Adding ID, Iso and Trigger scale factors: updated for 8TeV muons,
added for 8TeV electrons, 7TeV electrons & muons, added
systematic setting.
Making suggested corrections to getEfficiencyCorrections method in Electron.cpp and Muon.cpp.
Merge pull request #97 from jjacob/master

Adding ID, Iso and Trigger scale factors: updated for 8TeV muons,