Update README.md with new badges

Move to new badges for build status

README.md

@@ -2,8 +2,8 @@ Native Go Zookeeper Client Library
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 [![GoDoc](https://godoc.org/github.com/go-zookeeper/zk?status.svg)](https://godoc.org/github.com/go-zookeeper/zk)
-[![Build Status](https://travis-ci.org/go-zookeeper/zk.png)](https://travis-ci.org/go-zookeeper/zk)
-[![Coverage Status](https://coveralls.io/repos/github/go-zookeeper/zk/badge.svg?branch=master)](https://coveralls.io/github/go-zookeeper/zk?branch=master)
+[![Build Status](https://img.shields.io/github/workflow/status/go-zookeeper/zk/unittest/master)](https://github.com/go-zookeeper/zk/actions?query=branch%3Amaster)
+[![Coverage Status](https://img.shields.io/codecov/c/github/go-zookeeper/zk/master)](https://codecov.io/gh/go-zookeeper/zk/branch/master)
 
 License
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