Update README.md

README.md

@@ -1,3 +1,4 @@
+[![GoDev](https://pkg.go.dev/badge/github.com/ikawaha/kagome/v2)](https://pkg.go.dev/github.com/ikawaha/kagome/v2)
 [![Build Status](https://travis-ci.org/ikawaha/kagome.svg?branch=v2)](https://travis-ci.org/ikawaha/kagome)
 [![Build status](https://ci.appveyor.com/api/projects/status/k4g4bpy1ijqoasbe/branch/v2?svg=true)](https://ci.appveyor.com/project/ikawaha/kagome/branch/v2)
 [![Coverage Status](https://coveralls.io/repos/github/ikawaha/kagome/badge.svg?branch=v2)](https://coveralls.io/github/ikawaha/kagome?branch=v2)
@@ -6,7 +7,6 @@
 [![Docker Pulls](https://img.shields.io/docker/pulls/ikawaha/kagome.svg?style)](https://hub.docker.com/r/ikawaha/kagome/)
 [![Docker Automated build](https://img.shields.io/docker/cloud/automated/ikawaha/kagome.svg)](https://hub.docker.com/r/ikawaha/kagome/)
 
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 [Kagome](https://kagome.herokuapp.com/) v2
 ===