Update docs to keep up with code changes
Update docs to keep up with code changes

*fromQualityString* was renamed to *qualitystring_to_array*
TyberiusPrime/pysam,pysam-developers/pysam,bioinformed/pysam,kyleabeauchamp/pysam,bioinformed/pysam,pysam-developers/pysam,pysam-developers/pysam,TyberiusPrime/pysam,bioinformed/pysam,kyleabeauchamp/pysam,kyleabeauchamp/pysam,kyleabeauchamp/pysam,bioinformed/pysam,bioinformed/pysam,TyberiusPrime/pysam,kyleabeauchamp/pysam,TyberiusPrime/pysam,TyberiusPrime/pysam,pysam-developers/pysam