Update README.md (#26)

README.md

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-[![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat-square)](http://makeapullrequest.com)
-[![GitHub All Releases](https://img.shields.io/github/downloads/WeBankBlockchain/Governance-Account/total.svg)](https://github.com/WeBankBlockchain/Governance-Account)
-[![Codacy Badge](https://api.codacy.com/project/badge/Grade/97cfccf07bb446a6b3b0be6d7a1a6fe2)](https://app.codacy.com/gh/WeBankBlockchain/WeBankBlockchain-Governance-Account?utm_source=github.com&utm_medium=referral&utm_content=WeBankBlockchain/WeBankBlockchain-Governance-Account&utm_campaign=Badge_Grade_Dashboard)
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 # 组件介绍
 
 <br />WeBankBlockchain-Governance-Account 是一套开源的区块链账户治理的中间件解决方案，提供了多种区块链账户治理模式、账户生命周期管理、用户自主管理区块链账户治理相关的整体解决方案，提供了包括治理账户创建、多种治理模式选择、治理权限授权，账户创建、冻结、解冻、更换私钥、销户等账户生命周期的各类账户管理功能。<br />
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 - 如果发现代码存在安全漏洞，请在[这里](https://security.webank.com)上报。
 
 
-![](https://media.githubusercontent.com/media/FISCO-BCOS/LargeFiles/master/images/QR_image.png)
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 ## License
 ![license](http://img.shields.io/badge/license-Apache%20v2-blue.svg)