docs: updated README.md

Author: payamt007

README.md

@@ -1,18 +1,50 @@
-# FastAPI + SQLModel + Alembic + Celry + MongoDB + Redis + jwt Auth
+# FastAPI + SQLModel + Alembic + Celery + MongoDB + Redis + jwt Auth
 
-This project is an opinionated boilerplate for **FastAPI** micro framework that uses  **_SQLAlchemy_**, 
-_**SQLModel**_, **_PostgresSQL_**, _**Alembic**_, **_Celery_**, **_MongoDB_**, _**Redis**_, **_Docker_** and **_jwt Authentication_**. You can use this ready to
+This project is an opinionated boilerplate for **FastAPI** micro framework that uses  **_SQLAlchemy_**,
+_**SQLModel**_, **_PostgresSQL_**, _**Alembic**_, **_Celery_**, **_MongoDB_**, _**Redis**_, **_Docker_** and *
+*_jwt Authentication_**. You can use this ready to
 use sample and don't worry about CI pipelines and running database migrations and tests inside a FastAPI project.
 
-## Add new revision for database :
+## Add new tables to PostgresSQL database :
 
 ```sh
-alembic revision --autogenerate -m "init"
+git clone https://github.com/payamt007/FastAPI-Toolkit
+cd FastAPI-Toolkit/app
+```
 
-alembic upgrade head
+Then create new folder (for example artists) in `app` directory
+
+```sh
+cd artists
+````
+
+Create `__init__.py` file and a empty `models.py` file inside folder
+and paste this sample content inside `models.py` file:
+
+```python 
+from sqlmodel import Field, SQLModel
+
+
+class Artist(SQLModel, table=True):
+    id: int = Field(default=None, nullable=False, primary_key=True)
+    name: str
+    city: str
 ```
 
-## Want to use this project?
+go to `migrations/env.py` folder in root directory and add this content to it:
+
+```python
+from app.artists.models import Artist
+```
+
+then run new migration command in root directory:
+
+```sh
+alembic revision --autogenerate -m "added_artist_model"
+alembic upgrade head
+````
+
+## Want to run this project?
 
 ```sh
 $ docker-compose up -d --build
@@ -22,7 +54,6 @@ $ docker-compose up -d --build
 
 [http://127.0.0.0:8001/docs](http://127.0.0.0:8001)
 
-
 ### Add a song:
 
 ```sh