Code (step1.cc/.h) to slim LJMet trees. Built on ROOT's MakeClass.
To test: give input file name in testStep1.C, copy a relevant step1 onto step1.*
Run: root -l testStep1.C
Set up runCondorSlimmerJobs.py to run over LJMet files stored on Fermilab's EOS.
Run with submitSlimmerJobs.sh
Hadd output files with hadd.sh after setting up haddoutput.py