update some bugs

src/Notify/SwNotify.php

@@ -88,8 +88,8 @@ class SwNotify extends NotifyStrategy
 //        $values = ArrayUtil::arraySort($values);
         $signStr = ArrayUtil::createLinkstring($values);
 
-        $signStr .= '&access_token=' . $this->access_token;
-        switch ($this->signType) {
+        $signStr .= '&access_token=' . $this->config->access_token;
+        switch ($this->config->signType) {
             case 'MD5':
                 $sign = md5($signStr);
                 break;