[API v1.1.0] MONGO_DB_SOURCE_URL should not be hard coded #3
Description
In v1.0.0 you left all your API keys in the source code. In this version you have hard-coded MONG_DB_SOURCE_URL. You shouldn't do this because people might not want reference to your database in their production app. You should make this an environment variable so we can configure it to our own 'source'.