Documentation improvements for bioseg README.
Documentation improvements for bioseg README.



Former-commit-id: 334eaeaa4dec859ef86b8cf3b8549dca5191debf
julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine