add How to use to README

README.md

@@ -14,6 +14,8 @@ You can install the package in to a Laravel app that uses [Nova](https://nova.la
 composer require bolechen/nova-activitylog
 ```
 
+## How to use
+
 Next up, you must register the tool with Nova. This is typically done in the `tools` method of the `NovaServiceProvider`.
 
 ```php
@@ -30,6 +32,26 @@ public function tools()
 }
 ```
 
+Because backend we use the `spatie/laravel-activitylog` package, you need to do is let your model use the `Spatie\Activitylog\Traits\LogsActivity` trait.
+
+Here's an example:
+
+```php
+use Illuminate\Database\Eloquent\Model;
+use Spatie\Activitylog\Traits\LogsActivity;
+
+class NewsItem extends Model
+{
+    use LogsActivity;
+
+    protected $fillable = ['name', 'text'];
+
+    protected static $logAttributes = ['name', 'text'];
+}
+```
+
+For more advanced usage can look at the doc: https://docs.spatie.be/laravel-activitylog/v3/advanced-usage/logging-model-events
+
 ## License
 
 The MIT License (MIT). Please see [License File](LICENSE) for more information.

routes/api.php

@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the bolechen/nova-activitylog
+ *
+ * (c) Bole Chen <[email protected]>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Route;