Add option to load histograms from previously created file
move graph division and setting to makePlots function (to work with loading files)
Add script for loading file and plotting, and improve style of run.C
graphs not used other than making plots, so remove from everything but makePlots
minor bug fixes: change flux from int to float
pull tree initialization to separate functions, primarily for readability
add information to cut on ratio between maximum flux and average flux
minor style changes
output plots and root file to same subdirectory of output directory
ignore output directory
make nPhases a constant, _nSpills a constant of tbAna, and store info for efficiency vs trigger phase in 2D histograms
Draw efficiency vs trigger phase for each spill
set trees to NULL to begin to avoid crashes
added 2D hits vs flux histogram