docs(readme): add semantic-release badge

Author: davidnpma

README.md

@@ -1,6 +1,7 @@
 # redbox-react
 
 [![Build Status](https://travis-ci.org/KeywordBrain/redbox-react.svg?branch=master)](https://travis-ci.org/KeywordBrain/redbox-react)
+[![semantic-release](https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg)](https://github.com/semantic-release/semantic-release)
 
 The red box (aka red screen of death) renders an error in this “pretty” format: