Update glossary entry for CIGAR
Update glossary entry for CIGAR

kyleabeauchamp/pysam,pysam-developers/pysam,kyleabeauchamp/pysam,pysam-developers/pysam,kyleabeauchamp/pysam,pysam-developers/pysam,kyleabeauchamp/pysam,pysam-developers/pysam,kyleabeauchamp/pysam