fix:version

@@ -109,6 +109,7 @@ class Application
         $option->setTimeout((float)Arr::get($options, 'timeout', 5));
         $option->setEnableMock((bool)Arr::get($options, 'enable_mock'));
         $option->setSignMethod((string)Arr::get($options, 'sign_method', 'sha256'));
+        $option->setVersion((string)Arr::get($options, 'version', '2'));
         return $option;
     }