修改购物车接口

@@ -121,7 +121,7 @@ class Api
             $this->userId   = $user['id'];
         }
         $lang = $this->request->header('lang');
-        if (empty($lang)) $this->error('缺少lang!');
+//        if (empty($lang)) $this->error('缺少lang!');
         $this->lang = $lang;
         /*if (Config::get('url_domain_deploy')) {
             $domain = Route::rules('domain');