Update README.md

Author: nthndnn

README.md

@@ -462,48 +462,3 @@ Event::listen(StateTransitioned::class, function (StateTransitioned $event) {
     Log::info("Model {$event->model->getKey()} transitioned from {$event->from} to {$event->to}");
 });
 ```
-
-## Testing
-
-The package includes a generic `StateModelFactory` that provides a flexible foundation for creating test models in specific states:
-
-```php
-use NathanDunn\StateHistory\StateModelFactory;
-
-class ArticleFactory extends StateModelFactory
-{
-    protected $model = Article::class;
-
-    public function definition(): array
-    {
-        return [
-            'title' => fake()->sentence(),
-            'content' => fake()->paragraphs(3, true),
-        ];
-    }
-
-    // Add your own helper methods
-    public function draft(): static
-    {
-        return $this->inState('state', ArticleState::Draft);
-    }
-
-    public function published(): static
-    {
-        return $this->inState('state', ArticleState::Published);
-    }
-}
-
-// Use your custom methods
-$draftArticle = Article::factory()->draft()->create();
-$publishedArticle = Article::factory()->published()->create();
-
-// Or use the core inState method directly
-$reviewArticle = Article::factory()->inState('state', ArticleState::Review)->create();
-```
-
-The factory provides one core method that works with any field and state:
-
-- **`inState(string $field, BackedEnum|string $state)`** - Sets the `current_{field}` column to the specified state
-
-This gives you complete flexibility to define your own helper methods based on your specific enums and state names.