update readme

Author: Aidyn Makhataev

README.md

@@ -15,6 +15,17 @@ Via Composer
 composer require aidynmakhataev/laravel-tarantool-session
 ```
 
+Laravel uses Package Auto-Discovery, so doesn't require you to manually add the ServiceProvider.
+
+### Laravel without auto-discovery:
+
+If you don't use auto-discovery, add the ServiceProvider to the providers array in config/app.php
+
+```php
+\AidynMakhataev\Tarantool\Session\SessionServiceProvider::class
+```
+### Change session driver
+
 Change the session driver in `config/session.php` to tarantool:
 
     'driver' => 'tarantool',