include more detail on how to provide migrations..

ui/DEV.md

@@ -27,10 +27,14 @@ Managing the db format
 Alembic is used to manage upgrades.  The following process should be
 followed when updating the ORM:
 
-1. Implement tests for new feature, and make changes to the ORM as needed.
-2. Run the `autogen.sh` script to generate the base migration.  Modify as
-   needed.
-3. Add a test for the migration to _TestMigrations.  This should test
+1. Uncomment the orm.Base.metadata.create_all call, and comment out the
+   _handle_migration call a bit later, and disable the
+   test_<migration hash> tests.
+2. Implement tests for new feature, and make changes to the ORM as needed.
+3. Run the `autogen.sh` script from `medashare` to generate the base
+   migration.  Modify as needed.
+4. Add a test for the migration to _TestMigrations.  This should test
    by creating an ObjectStore at the previous stage, add representative
    objects that will test the migration, and then run a migration, and
    make sure features still work as expected afterward.
+5. Revert changes made in step 1