Fixed usage message for new build script.
Fixed usage message for new build script.



Former-commit-id: 4309faa2f676d9297189cf9c0b08bde6019c6ba1
julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine