PREREQUISITE
1. Multiple (at least 10) RAMD dossociation trajectories must be generated using either Gromacs or NAMD software
In the later case script must be modified a bit:  
soft = "Gr" must be changed to 
soft = "NAMD"
2. lines of the output files where ligand dissociation is reported
for Gromacs: “XX/YYYY.out:==== RAMD ==== GROMACS will be stopped after xxxxx steps.”
for NAMD: "EXIT: xxxxx  > LIGAND EXIT EVENT DETECTED: STOP SIMULATION"
must ge collected in a single file or in multiple files (if trajectories were started from different input coordinate and velocities files) 
USAGE
tauRAMD-v1.py  input_file[s]
input files must contain a set of lines extracted from the gromacs output. Each line contains the number of steps executed before dissociation 
and has the following format: “XX/YYYY.out:==== RAMD ==== GROMACS will be stopped after 874650 steps.”
or if RAMD simulations were done using NAMD software: "EXIT: 462950  > LIGAND EXIT EVENT DETECTED: STOP SIMULATION"
OUTPUT
residence time with the standard deviation computed for each input_file and an images with representation of the bootstrapping output and statistics
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