Usage:
   qvality [options] target_file null_file
or
   qvality [options] pvalue_file

The files target_file and null_file contain, respectively, the
observed scores and the scores from the null model.  Within each file,
scores are separated by whitespace or line feeds.  Alternatively,
p-values can be provided in a single pvalue_file.

Options:

 -h
 --help                              Display this message

 -v <level>
 --verbose <level>                   Set verbosity of output: 0=no processing 
                                     info, 5=all, default is 2
 -s <value>
 --epsilon-step <value>              The relative step size used as a threshold 
                                     before cross validation error is calculated.
 -n <bins>
 --number-of-bins <bins>             The number of spline knots used when 
                                     interpolating the spline function. Default is 
                                     500.
 -c <value>
 --epsilon-cross-validation <value>  The relative cross validation step size used 
                                     as a threshold for ending the iterations.
 -r
 --reverse                           Indicate that the scoring mechanism is 
                                     reversed, i.e., that low scores are better 
                                     than higher scores