[Change]: Allow to change the notification priority parameter as Expo documentation.

Author: abdullah-abunada

README.md

@@ -119,6 +119,7 @@ A list of all available options
 -   `ttl(60)`: Accepts an integer value for the time to live.
 -   `jsonData('')`: Accepts a json string or an array for additional.
 -   `channelID('')`: Accepts a string to set the channelId of the notification for Android devices.
+-   `priority('default')`: Accepts a string to set the priority of the notification, must be one of [default, normal, high].
 
 ### Managing Recipients
 

src/ExpoMessage.php

@@ -206,13 +206,13 @@ public function setJsonData($data)
     }
 
     /**
-     *  Set the priority of the notification for Android devices, must be one of [default, normal, high].
+     *  Set the priority of the notification, must be one of [default, normal, high].
      *
      * @param string $priority
      *
      * @return $this
      */
-    public function setPriority(string $priority)
+    public function priority(string $priority)
     {
         $this->priority = $priority;