Update readme to show how to get the feed from the app

README.md

@@ -34,6 +34,7 @@ $feed->markAsRead($notification);
 ## Navigation
 
 - [Installation](#installation)
+- [Using the Feed](#using-the-feed)
 - [Setting Up Notifiable Models](#setting-up-notifiable-models)
     - [Notifiable Groups](#notifiable-groups)
 - [Available Methods](#available-methods)
@@ -67,6 +68,36 @@ The package comes with migrations to setup the default database structure. We re
 
 To publish the migrations run `php artisan vendor:publish`.
 
+## Using the Feed
+
+Once installed you can access the feed in multiple ways.
+
+Firstly you can dependency inject it from the IOC container by either the push or pull feed interfaces. Both interfaces will return the same instance, it's just to make your code more readable.
+
+```php
+public function __construct(
+    Michaeljennings\Feed\Contracts\PullFeed $pullFeed,   
+    Michaeljennings\Feed\Contracts\PushFeed $pushFeed,   
+) {
+    $this->pullFeed = $pullFeed;
+    $this->pushFeed = $pushFeed;
+}
+```
+
+Or you there is a helper method.
+
+```php
+$feed = feed();
+```
+
+Or if you want to use a facade you can register it in the aliases array in `config/app.php`.
+
+```php
+'aliases' => [
+    Michaeljennings\Feed\Facades\Feed::class
+]
+```
+
 ## Setting Up Notifiable Models
 
 To set up a notifiable model you simply need to implement the notifiable interface and then use the notifiable trait.