update: README.md

Add docstrings and README.md

Init commit add classes/, main.py, exapmle - calentines.csv

Add db.models.py, db.session.py, config.py, test.py

Init commit: add db.models.py, db.session.py, config.py

refactoring and add docstrings

Change structure and refactoring

correct pase in add

fix bags format

change pace format all

change formate pace

change format pace

add create table

mini changes

mini changes

mini changes

delete .env

mini-changes

mini-changes