更改默认async参数，方便外部控制参数值

component/pear/module/admin.js

@@ -33,7 +33,7 @@ layui.define(['table', 'jquery', 'element', 'form', 'tab', 'menu', 'frame'],
 			this.menuRender = function(param) {
 				sideMenu = pearMenu.render({
 					elem: 'sideMenu',
-					async: true,
+					async: param.menu.async != undefined ? param.menu.async : true,
 					theme: "dark-theme",
 					height: '100%',
 					control: param.menu.control ? 'control' : false, // control 

component/pear/module/menu.js

@@ -13,7 +13,7 @@ layui.define(['table', 'jquery', 'element'], function(exports) {
 		//默认配置值
 		var option = {
 			elem: opt.elem,
-			async: opt.async ? opt.async : false,
+			async: opt.async,
 			parseData: opt.parseData,
 			url: opt.url,
 			defaultOpen: opt.defaultOpen,