code: def rnaseqc_general_stats (self):
          
          headers = OrderedDict()
          headers['Expression Profiling Efficiency'] = {
              'title': '% Expression Efficiency',
              'description': 'Expression Profiling Efficiency: Ratio of exon reads to total reads',
              'max': 100,
              'min': 0,
              'suffix': '%',
              'scale': 'YlGn',
              'modify': lambda x: float(x) * 100.0
          }
          headers['Genes Detected'] = {
              'title': '# Genes',
              'description': 'Number of genes detected with at least 5 reads.',
              'min': 0,
              'scale': 'Bu',
              'format': '{:,.0f}'
          }
          headers['rRNA rate'] = {
              'title': '% rRNA Alignment',
              'description': ' rRNA reads (non-duplicate and duplicate reads) per total reads',
              'max': 100,
              'min': 0,
              'suffix': '%',
              'scale': 'Reds',
              'modify': lambda x: float(x) * 100.0
          }
  
          self.general_stats_addcols(self.rna_seqc_metrics, headers)
docs: Add alignment rate to the general stats table