优化：引入 moment 组件库中文包；

optimize: import chinese language for moment library;

src/main.js

@@ -10,6 +10,7 @@ import 'animate.css/source/animate.css'
 import Plugins from '@/plugins'
 import {initI18n} from '@/utils/i18n'
 import bootstrap from '@/bootstrap'
+import 'moment/locale/zh-cn'
 
 const router = initRouter(store.state.setting.asyncRoutes)
 const i18n = initI18n('CN', 'US')