function __construct($token = null, $count = null, $size = null)
 {
     if (!empty($token)) {
         self::$access_token = $token;
     }
     if (!empty($count)) {
         self::$count = $count;
     }
     if (!empty($size)) {
         self::$display_size = $size;
     }
     self::$result = self::fetch("https://api.instagram.com/v1/users/self/media/recent?count=" . self::$count . "&access_token=" . self::$access_token);
     self::$result = json_decode(self::$result);
     // https://api.instagram.com/v1/users/self/feed
 }