* added README file

* added README.md file for SHMS DC Calibrations

* Added readme file for shms dc calibration

* Added minor fix to the script to fix compilationerror in root 5.34.36

* minor fix

* get_tzero_per_wire_param.C

* fix to be compatible with root 5.34.36

* fix minor issues

* added stricter restriction on good t0 selection

* added option to read input file and event number to loop over

* added option to read input file and number of entries to analyze

* swapped x:y axes in 2d plots to display drift times vs. wire number, and added labels to the axes

* minor change in output file name

* added option to read filename, and changed the naming scheme of the output .root and .dat files produced

* added option to read input file and number of events, also changed naming of input and output .dat files to be consistent with the other changes made so far.

* added option to read input file and number of entries

* added option to read input file and number of events, and also added axes titles to histos

* added option to read input file and numberof events, also modified name of .root file being read

* added axes titles to histos

* added option to promt user to enter input file, run number, and number events to analyze. Also made a few improvements overall

* -added script that will output a parameter file with individual tzero values (NOT per ribbon cable as before)

* -included the execution of 'get_tzero_per_wire.param' in steering script.

* -added precicion to the t0 calculation. Although the calculation involved the ratios of two 'doubles', the t0 came out to be an integer. This imprecision was corrected.

* -add minor fix

* added minor fix to read in corrected t0 values

* minor fix

* most up-to-date shms DC param files

* initialied script for writing individual wire tzero values into a parameter file

* script to add tzero param

* -added statement that explicitly assigns a tzero value of zero if certain criteria are not met, rather than leaving a blank line.

* -Added boolean operator to determine ribbon cable group and looped over
each ribbon cable group corresponding to shms planes DC 1U1 and DC 1U2, so far.
...Work in Progress to calculate weighted average t0 per ribbon cable.

* -script that gets tzero values per ribbon cable and writes out a param file
with the tzero values on a wire basis.

* -made few modifications (still not complete)

* -added dynamic array that holds the group value (5 or 7) for each plane

* SHMS DC Calibration script that takes the weighted average tzero per ribbon cable, and produces a parameter file containing the weighted average tzero per ribbon cable group, expressed on a wire-by-wire basis.

* -added lines to read in run number from a text file

* -added line to execute 'get_tzero_param.C' which creates a parameter
file with updated tzero values.

run_Cal.C          commented out some boolean statements producing
                   that were producing a compilaton error. Commented out
                   execution of script update_pdcparam.C, as it is obsolete,
                   since we will be using a new paramerer file containing
                   individual wire tzero.

get_pdc_time_histo.C  commented out obsolete lines that created some directories

wire_drift_times.C  declared 'wirenum' variable outside of loop to solve the
                    "use of undeclared identifier" compilation error

get_wire_tzero.C    moved several variable declarations outside the loop
		    over sensewires to solve  "use of undeclared identifier"
		    compilation error

get_LookUp_Values.C minor syntax error fix.