added fit input array
fixed variable binning for M_bl
added no-indent option for JSON-write to safe space
added script for more fit checks + command for data preparation
Merge pull request #114 from kreczko/more-fit-checks-cleaned

More fit checks
First working example of extracting b jet efficiencies.
Work on btag producer.  Calculate efficiencies binned in eta and pt (of reco jet) and output histogram.
Modify script to run on BLT output and to run on all the necessary samples.