Enhanced error message on app deploys missing db

When deploying for the first time there is no database present. If a customer's application relies on a database connection for deploy it will fail. We can give instructions to mitigate this issue to users who encounter this error.
Merge pull request #235 from heroku/schneems/db-bootstrap

Enhanced error message on app deploys missing db
Enhanced error message on app deploys missing db

When deploying for the first time there is no database present. If a customer's application relies on a database connection for deploy it will fail. We can give instructions to mitigate this issue to users who encounter this error.
Merge pull request #236 from heroku/schneems/db-bootstrap

Enhanced error message on app deploys missing db
bump to v110
v110
spelling
don't make :publish public
v111
bump to v111