Merge pull request #26 from nitishm/fix/25/godoc-badge

Add godoc badge to README.md

README.md

@@ -1,6 +1,7 @@
 # Go-ReJSON - a golang client for ReJSON (a JSON data type for Redis)
 Go-ReJSON is a [Go](https://golang.org/) client for [rejson](https://github.com/RedisLabsModules/rejson) redis module. 
 
+[![GoDoc](https://godoc.org/github.com/nitishm/go-rejson?status.svg)](https://godoc.org/github.com/nitishm/go-rejson)
 [![Build Status](https://travis-ci.org/nitishm/go-rejson.svg?branch=master)](https://travis-ci.org/nitishm/go-rejson)
 [![codecov](https://coveralls.io/repos/github/nitishm/go-rejson/badge.svg?branch=master)](https://coveralls.io/github/nitishm/go-rejson?branch=master)
 [![Go Report Card](https://goreportcard.com/badge/github.com/nitishm/go-rejson)](https://goreportcard.com/report/github.com/nitishm/go-rejson)