Clean up code. Fix POD. Add genome_db and length methods
Clean up code. Fix POD.
Add genome_db and length methods

Ensembl/ensembl-compara,etapanari/ensembl-compara,ckongEbi/ensembl-compara,kumarsaurabh20/ensembl-compara,kumarsaurabh20/ensembl-compara,danstaines/ensembl-compara,Ensembl/ensembl-compara,Ensembl/ensembl-compara,danstaines/ensembl-compara,danstaines/ensembl-compara,dbolser-ebi/ensembl-compara,etapanari/ensembl-compara,Ensembl/ensembl-compara,dbolser-ebi/ensembl-compara,Ensembl/ensembl-compara,etapanari/ensembl-compara,kumarsaurabh20/ensembl-compara,dbolser-ebi/ensembl-compara,Ensembl/ensembl-compara,etapanari/ensembl-compara,kumarsaurabh20/ensembl-compara,Ensembl/ensembl-compara,danstaines/ensembl-compara,ckongEbi/ensembl-compara,ckongEbi/ensembl-compara,danstaines/ensembl-compara,Ensembl/ensembl-compara