[9.x] Added docs for lineIf and attachMany

notifications.md

@@ -317,6 +317,7 @@ The `MailMessage` class contains a few simple methods to help you build transact
         return (new MailMessage)
                     ->greeting('Hello!')
                     ->line('One of your invoices has been paid!')
+                    ->lineIf($this->amount > 0, "Amount paid: {$this->amount}")
                     ->action('View Invoice', $url)
                     ->line('Thank you for using our application!');
     }
@@ -532,6 +533,27 @@ Unlike attaching files in mailable objects, you may not attach a file directly f
                     ->attachFromStorage('/path/to/file');
     }
 
+When necessary, multiple files may be attached to a message using the `attachMany` method:
+
+    /**
+     * Get the mail representation of the notification.
+     *
+     * @param  mixed  $notifiable
+     * @return \Illuminate\Notifications\Messages\MailMessage
+     */
+    public function toMail($notifiable)
+    {
+        return (new MailMessage)
+                    ->greeting('Hello!')
+                    ->attachMany([
+                        '/path/to/forge.svg',
+                        '/path/to/vapor.svg' => [
+                            'as' => 'Logo.svg',
+                            'mime' => 'image/svg+xml',
+                        ],
+                    ]);
+    }
+
 <a name="raw-data-attachments"></a>
 #### Raw Data Attachments