Remove the authentication

[JDaniloC]

To facilitate the use of the bot and avoid misunderstanding about licenses, you need to add a flag to disable the authentication of the MongoDB. And it's interesting to add a script to create the first setup in MongoDB. Finally, the documentation must be updated, explain that the project is dead only for study and explain how to enable the authentication again:

• Disable the authentication.
• Update the documentation explain the project death.