Default for Dispdiff is wrongly documented

[zslastman]

Hey guys - looks like the manual has the wrong default for the disp diff option:

Text in the manual:

  OPTIONAL:
    -d DISPDIFF      Allow different dispersions for Ribo-seq and RNA-seq
                     count data. On: 1; Off: 0. [default: 1]

Code in option parsing (line 22, parseopts.py):

    optional.add_option('-d', action='store', type='int', dest='dispDiff', default=0, help='Allow different dispersions for Ribo-seq and RNA-seq count data. Off: 0; On: 1. [default: 0]')

Presumably 1 is the sensible default, as that's Ribodiff's 'killer feature' that sets it appart from say DESeq.

I forked the repo and fixed it here: https://github.com/zslastman/RiboDiff/commit/0a1e8a4a1853939f4198c9c1be5339b3dfa1ac0c