【更新】首页徽章版本显示信息。

Signed-off-by: armink <armink.ztl@gmail.com>

README.md

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 # EasyFlash 
 
-[![GitHub release](https://img.shields.io/github/release/armink/EasyFlash.svg)](https://github.com/armink/EasyFlash/releases/latest) [![GitHub commits](https://img.shields.io/github/commits-since/armink/EasyFlash/3.1.0.svg)](https://github.com/armink/EasyFlash/compare/3.1.0...master) [![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](https://raw.githubusercontent.com/armink/EasyFlash/master/LICENSE)
+[![GitHub release](https://img.shields.io/github/release/armink/EasyFlash.svg)](https://github.com/armink/EasyFlash/releases/latest) [![GitHub commits](https://img.shields.io/github/commits-since/armink/EasyFlash/3.2.1.svg)](https://github.com/armink/EasyFlash/compare/3.2.1...master) [![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](https://raw.githubusercontent.com/armink/EasyFlash/master/LICENSE)
 
 ## 1、介绍（[English](#1-introduction)）