Update README.md for lumen usage

Author: Admin

README.md

@@ -13,10 +13,17 @@ Library for [laravel-crud-wizard-free](https://github.com/macropay-solutions/lar
 ``` composer require macropay-solutions/laravel-crud-wizard-generator --dev ```
 
 
-2\. Publish the provider:
+2\. Publish the provider in laravel:
 
 ``` php artisan vendor:publish --provider="MacropaySolutions\LaravelCrudWizardGenerator\LaravelCrudWizardGeneratorServiceProvider" ```
 
+or in lumen add in bootstrap/app.php
+
+```php
+if (\env('APP_ENV') === 'local') {
+    $app->register(\MacropaySolutions\LaravelCrudWizardGenerator\LaravelCrudWizardGeneratorServiceProvider::class);
+}
+```
 
 ## Usage