made possible also for non equidistant binning
Merge branch 'master' of https://github.com/ffrensch/HiggsAnalysis-HiggsToTauTau
Merge branch 'master' of https://github.com/cms-analysis/HiggsAnalysis-HiggsToTauTau
Merge pull request #488 from ffrensch/master

 	made possible also for non equidistant binning