Write on README how to create and run db migration script

[isabelcosta]

Description

As a developer,
I need steps to create an Alembic migration script,
so that I can know how to create migration script and upgrade database schema version.

Write couple steps concisely on README to explain how to create and run migration script

tip: If you are inexperienced with alembic migrations, it might be worth it to try this out your self, by changing a property in a database model (sqlalchemy) and create script + upgrade/downgrade versions. If you use local env variable, your db will be sqlite based, so easily deleted and created.

References:

• Added basic support for database migrations #335 this PR introduced support to flask migrate, so "how do I use it?" section might help with this.
• https://flask-migrate.readthedocs.io/en/latest/

Acceptance Criteria

Update [Required]

• Steps to do this are concisely explained on a separate README section

Definition of Done

• All of the required items are completed.
• Approval by 1 mentor.

Estimation

1 hours

[nlok5923]

@isabelcosta i would like to work on it.

[epicadk]

Sure assigning you @nlok5923 : ). Good luck.

[mtreacy002]

Self-assigning myself to this issue 😉. cc @epicadk and @vj-codes