fixed camera tv-ip311pi url

app/Http/Business/Cameras/Trendnet/TVIP311PI.php

@@ -27,7 +27,7 @@ class TVIP311PI extends AbstractCamera
         parent::__construct($camera);
         $this->_client = new Client();
         $data = $camera->getData();
-        $this->_url = $data["Host"] . ":" . $data["Port"] . self::URI;
+        $this->_url = "http://" . $data["Host"] . ":" . $data["Port"] . self::URI;
         $this->_options = [];
     }