upgrade migrate.sh && add README.md with UML

README.md

@@ -0,0 +1,57 @@
+
+## music-service 
+
+# dir structure
+
+```bash
+
+.
+├── account
+│   ├── admin.py
+│   ├── apps.py
+│   ├── models.py
+│   ├── serializers.py
+│   ├── tests.py
+│   └── views.py
+├── album
+│   ├── admin.py
+│   ├── apps.py
+│   ├── models.py
+│   ├── serializers.py
+│   ├── tests.py
+│   └── views.py
+├── asgi.py
+├── comment
+│   ├── admin.py
+│   ├── apps.py
+│   ├── models.py
+│   ├── serializers.py
+│   ├── tests.py
+│   └── views.py
+├── playlist
+│   ├── admin.py
+│   ├── apps.py
+│   ├── models.py
+│   ├── tests.py
+│   └── views.py
+├── rating
+│   ├── admin.py
+│   ├── apps.py
+│   ├── models.py
+│   ├── serializers.py
+│   ├── tests.py
+│   └── views.py
+├── settings.py
+├── urls.py
+├── utils.py
+└── wsgi.py
+
+```
+
+# diagram class
+
+![diagram_class](https://images-wixmp-ed30a86b8c4ca887773594c2.wixmp.com/f/12abb353-ab91-4433-96d3-b5d9c5847254/de1x3ts-af1f9daf-1aad-439a-87e4-891ea7934b90.png/v1/fill/w_1280,h_1199,strp/music_service_class_diagram_by_00x097_de1x3ts-fullview.png?token=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJ1cm46YXBwOiIsImlzcyI6InVybjphcHA6Iiwib2JqIjpbW3siaGVpZ2h0IjoiPD0xMTk5IiwicGF0aCI6IlwvZlwvMTJhYmIzNTMtYWI5MS00NDMzLTk2ZDMtYjVkOWM1ODQ3MjU0XC9kZTF4M3RzLWFmMWY5ZGFmLTFhYWQtNDM5YS04N2U0LTg5MWVhNzkzNGI5MC5wbmciLCJ3aWR0aCI6Ijw9MTI4MCJ9XV0sImF1ZCI6WyJ1cm46c2VydmljZTppbWFnZS5vcGVyYXRpb25zIl19.MQ8Y8G1kYVZE4WzlAbs_iAx_8fztG-uhhTMvzVO6Ovw)
+
+# diagram class by apps
+
+![diagram_class_by_apps](https://images-wixmp-ed30a86b8c4ca887773594c2.wixmp.com/f/12abb353-ab91-4433-96d3-b5d9c5847254/de1x3sf-d977ce0b-fca5-498c-84ce-f899375491ba.png/v1/fill/w_1280,h_811,q_80,strp/music_service_class_diagram_by_apps_by_00x097_de1x3sf-fullview.jpg?token=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJ1cm46YXBwOiIsImlzcyI6InVybjphcHA6Iiwib2JqIjpbW3siaGVpZ2h0IjoiPD04MTEiLCJwYXRoIjoiXC9mXC8xMmFiYjM1My1hYjkxLTQ0MzMtOTZkMy1iNWQ5YzU4NDcyNTRcL2RlMXgzc2YtZDk3N2NlMGItZmNhNS00OThjLTg0Y2UtZjg5OTM3NTQ5MWJhLnBuZyIsIndpZHRoIjoiPD0xMjgwIn1dXSwiYXVkIjpbInVybjpzZXJ2aWNlOmltYWdlLm9wZXJhdGlvbnMiXX0.sJmLVbWBIkyd846m3I6vfYhQpdJiOzfe1KOSUKQBP9c)

migrate.sh

@@ -2,3 +2,6 @@ python manage.py makemigrations
 python manage.py migrate
 python manage.py graph_models -a -g -o class_diagram_by_apps.png
 python manage.py graph_models -a -o class_diagram.png
+
+# directory structure
+# tree -I '.git|__pycache__|migrations|__init__.py'