message: fix the typo in issue
  fix
diff: @@ -93,7 +93,7 @@ void Parameters::usage(char** argv) {
  << endl
  << " # naive variant calling: simply annotate observation counts of SNPs and indels" << endl
  << " freebayes -f ref.fa --haplotype-length 0 --min-alternate-count 1 \\ " << endl
  - << " --min-alternate-fraction 0 --pooled-continuous --report-monomorphic >var.vcf" << endl
  + << " --min-alternate-fraction 0 --pooled-continuous --report-monomorphic aln.bam >var.vcf" << endl
  << endl
  << endl
  << "parameters:" << endl
  