Update docs

docs/tutorial/splitting-apps.md

@@ -15,45 +15,54 @@ mycli/
 ├── users/
 │   ├── __init__.py
 │   ├── add.py
-│   ├── delete.py
+│   └── delete.py
+└── version.py
 ```
 
+This application will have the following commands:
+
+- `users add`
+- `users delete`
+- `version`
+
 ## Implementation
 
-### Main Application (`main.py`)
+### Version Module (`version.py`)
+
+Let's start by creating a simple module that prints the version of the application.
 
 ```python
 import typer
-from .users import app as users_app
 
 app = typer.Typer()
 
-app.add_typer(users_app, name="users")
+@app.command()
+def version():
+    typer.echo("MyCLI version 1.0.0")
+```
 
-@app.callback()
-def callback():
-    """
-    Awesome CLI application that does everything
-    """
-    pass
+In this example, we are creating a new `Typer` app instance for the `version` module. This is not required for a single-file application but is necessary for a multi-file application, as it will allow us to include this command in the main app using `add_typer`.
 
-if __name__ == "__main__":
-    app()
-```
+### Main Module (`main.py`)
 
-### Users Module (`users/__init__.py`)
+The main module will be the entry point of the application. It will import the version module and the users module.
 
 ```python
 import typer
 
-from .add import app as add_app
-from .delete import app as delete_app
+from version import app as version_app
+from users import app as users_app
 
 app = typer.Typer()
-app.add_typer(add_app)
-app.add_typer(delete_app)
+
+app.add_typer(version_app)
+app.add_typer(users_app, name="users")
 ```
 
+In this module, we import the `version` and `users` modules and add them to the main app using `add_typer`. For the `users` module, we specify the name as `users` to group the commands under the `users` namespace.
+
+Let's now create the `users` module with the `add` and `delete` commands.
+
 ### Users Add Command (`users/add.py`)
 
 ```python
@@ -78,11 +87,4 @@ def delete(name: str):
     typer.echo(f"Deleting user: {name
 ```
 
-## Running the Application
-
-To run the application, use the following command:
-
-```bash
-$ python mycli/main.py users add John
-Adding user: John
-```
+Similar to the `version` module, we create a new `Typer` app instance for the `users` module. This allows us to include the `add` and `delete` commands in the users app.