fixing the names of the log files (from make_pull*.sh) to include the number of toy MC for error calculation.
ported the essentials for QCD estimation tool from AnalysisSoftware (electron channel)
added generator for QCD from data templates (correctly normalised)
adding *.root to gitignore. It's safer this way.
A futile attempt to make the cross section measurement procedure beatiful. To be continued.
Merge pull request #8 from kreczko/master

Unfolding updates + experimental stuff