first commit
fixed: correctly run on CMSSW 5.2.3. Postfix was changed

Warning: Only PFAK5 jets are processed right now.
added: crab config file for 2012 datas
updated .gitignore
removed 2011 related config files for crab
fixed: we need to call Sumw2 for proper errors
(cherry picked from commit 15bb590c393a3989194b9587f550f25f61ca589c)
added: helper script for running all step 3 at the same time
added: mpf extrapolation for raw response
fixed: use MPF value for mpf related histograms
fixed: check if input file is empty before using it in TChain
(cherry picked from commit 9712da9b802bac8c2585c89a20027ff6626a4bb2)
changed: refactored getYPoints in order to calculte only once RMS and
RMS error
(cherry picked from commit 383d755b00e4fa021106259585007a6653cdb620)
fixed: raw gen mpf is meaningless. Only use gen mpf
(cherry picked from commit eb5cb0b22e2cb397bc84ccd25271ceeb13554d45)
added: README file for a howto setup
(cherry picked from commit 38eac40f5d3ab395d0cdfe3f39f69886f23f2538)
updated: README instructions for CMSSW 5.2
changed: welcome in 2012
changed: beams are now 8 TeV!
changed: moved a bit the pt binning label
changed: use TCLAP for commandline parsing
added: final utility for drawing plots
changed: draw final step for all eta bins
added: flag for mc comparison
added: balancing / mpf response for 0 < eta < 2.4
changed: enable c++0x when building our utilities
fixed: use new postFix for CMSSW 5.2 +
added: missing branches to analysis tree