update readme

Author: z-song

README.md

@@ -3,42 +3,33 @@ laravel-admin-ext/media-manager
 
 Media manager for `local` disk.
 
+## Screenshot
+
+![wx20170809-170104](https://user-images.githubusercontent.com/1479100/29113762-99886c32-7d24-11e7-922d-5981a5849c7a.png)
 
 ## Installation
 
 ```
 $ composer require laravel-admin-ext/media-manager -vvv
 
+$ php artisan admin:import media-manager
 ```
 
-Open `app/Providers/AppServiceProvider.php`, and call the `MediaManager::boot` method within the `boot` method:
+Add a disk config in `config/admin.php`:
 
 ```php
-<?php
 
-namespace App\Providers;
+    'extensions' => [
 
-use Encore\Admin\Media\MediaManager;
-use Illuminate\Support\ServiceProvider;
-
-class AppServiceProvider extends ServiceProvider
-{
-    public function boot()
-    {
-        MediaManager::boot();
-    }
-}
-```
+        'media-manager' => [
+            'disk' => 'public'
+        ],
+    ],
 
-At last run: 
-
-```
-$ php artisan admin:import media-manager
 ```
 
-Add a disk 
 
-Finally open `http://localhost/admin/media`.
+Open `http://localhost/admin/media`.
 
 License
 ------------

src/MediaServiceProvider.php

@@ -9,5 +9,7 @@ class MediaServiceProvider extends ServiceProvider
     public function boot()
     {
         $this->loadViewsFrom(__DIR__.'/../resources/views', 'laravel-admin-media');
+
+        MediaManager::boot();
     }
 }