app.config options

[vincentdavis]

Thanks for the tutorial!
The tutorial could benefit from adding links to available option in app.config. The link provided documents the connect() settings for mongoengine. I was only able to find the following options on a stackoverflow.
http://stackoverflow.com/questions/13942686/how-to-run-flask-and-mongoengine-with-a-remote-host

MONGODB_DB
MONGODB_USERNAME
MONGODB_PASSWORD
MONGODB_HOST
MONGODB_PORT