initial check-in of read-me for update script
initial check-in of read-me for update script



Former-commit-id: 2e6717ba88541c7bb1fd93014a50a88d577c0773
julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine