Update README.md [skip ci]

README.md

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-laravel-admin-ext/config
+Config manager for laravel-admin
 ========================
 
+[![StyleCI](https://styleci.io/repos/97900916/shield?branch=master)](https://styleci.io/repos/97900916)
 [![Packagist](https://img.shields.io/packagist/l/laravel-admin-ext/config.svg?maxAge=2592000)](https://packagist.org/packages/laravel-admin-ext/config)
 [![Total Downloads](https://img.shields.io/packagist/dt/laravel-admin-ext/config.svg?style=flat-square)](https://packagist.org/packages/laravel-admin-ext/config)
+[![Pull request welcome](https://img.shields.io/badge/pr-welcome-green.svg?style=flat-square)]()
 
 Inspired by https://github.com/laravel-backpack/settings.
 
+[Documentation](http://laravel-admin.org/docs/#/en/extension-config) | [中文文档](http://laravel-admin.org/docs/#/zh/extension-config)
+
 ## Screenshot
 
 ![wx20170810-100226](https://user-images.githubusercontent.com/1479100/29151322-0879681a-7db3-11e7-8005-03310686c884.png)