* added setup.sh, which currently only sets the PYTHONPATH to include
the python directory
* update .gitignore to allow .sh files in project root
set higher number of points for f_gausexp rendering: SetNpx(500)
test if PYTHONPATH already includes project's python directory
* added setup.sh
* added c++ beautifier:
   + depends on bcpp
   + depends on setup.sh
   + added bcpp.cfg -- beautifier configuration
   + added bcpp.sh -- bccp.sh <file> beautifies <file> and saves
     backup as <file>.bak
* added session.FitExGauss.py -- edited ipython2 session of fitting
  random mmp histogram
* added lims property (parameter limits) to some python TF1 instances:
   + instance returned by epfuncs.f_gausexp
   + instance fsigbg in python/session.FitExGauss.py
* added h3eff_acc, h3eff_cc effective efficiency histograms in
  h3maker.h
* beautified h3maker.h