Update README.md [skip ci]

Author: z-song

README.md

@@ -1,9 +1,12 @@
-laravel-admin-ext/helpers
+Helpers for laravel-admin
 =========================
 
-[![StyleCI](https://styleci.io/repos/97667375/shield?branch=master)](https://styleci.io/repos/97667375)
+[![StyleCI](https://styleci.io/repos/97900966/shield?branch=master)](https://styleci.io/repos/97900966)
 [![Packagist](https://img.shields.io/packagist/l/laravel-admin-ext/helpers.svg?maxAge=2592000)](https://packagist.org/packages/laravel-admin-ext/helpers)
 [![Total Downloads](https://img.shields.io/packagist/dt/laravel-admin-ext/helpers.svg?style=flat-square)](https://packagist.org/packages/laravel-admin-ext/helpers)
+[![Pull request welcome](https://img.shields.io/badge/pr-welcome-green.svg?style=flat-square)]()
+
+[Documentation](http://laravel-admin.org/docs/#/en/extension-helpers) | [中文文档](http://laravel-admin.org/docs/#/zh/extension-helpers)
 
 ## Installation