Merge pull request #31 from LyricTian/develop

modify readme

Author: LyricTian

README.md

@@ -130,8 +130,8 @@ Copyright (c) 2016 Lyric
 [License-Image]: https://img.shields.io/npm/l/express.svg
 [Build-Status-Url]: https://travis-ci.org/go-oauth2/oauth2
 [Build-Status-Image]: https://travis-ci.org/go-oauth2/oauth2.svg?branch=master
-[Release-Url]: https://github.com/go-oauth2/oauth2/releases/tag/v3.4.8
-[Release-image]: http://img.shields.io/badge/release-v3.4.8-1eb0fc.svg
+[Release-Url]: https://github.com/go-oauth2/oauth2/releases/tag/v3.4.9
+[Release-image]: http://img.shields.io/badge/release-v3.4.9-1eb0fc.svg
 [ReportCard-Url]: https://goreportcard.com/report/gopkg.in/oauth2.v3
 [ReportCard-Image]: https://goreportcard.com/badge/gopkg.in/oauth2.v3
 [GoDoc-Url]: https://godoc.org/gopkg.in/oauth2.v3