docs(readme): add circle.ci badge

README.md

@@ -4,7 +4,7 @@
 [![](https://img.shields.io/badge/project-IPFS-blue.svg?style=flat-square)](http://ipfs.io/)
 [![](https://img.shields.io/badge/freenode-%23ipfs-blue.svg?style=flat-square)](http://webchat.freenode.net/?channels=%23ipfs)
 [![standard-readme compliant](https://img.shields.io/badge/standard--readme-OK-green.svg?style=flat-square)](https://github.com/RichardLitt/standard-readme)
-[![Build Status](https://travis-ci.org/ipfs/js-ipfs-repo.svg)](https://travis-ci.org/ipfs/js-ipfs-repo)
+[![Build Status](https://travis-ci.org/ipfs/js-ipfs-repo.svg)](https://travis-ci.org/ipfs/js-ipfs-repo) [![Circle CI](https://circleci.com/gh/ipfs/js-ipfs-repo.svg?style=svg)](https://circleci.com/gh/ipfs/js-ipfs-repo)
 [![Coverage Status](https://coveralls.io/repos/github/ipfs/js-ipfs-repo/badge.svg?branch=master)](https://coveralls.io/github/ipfs/js-ipfs-repo?branch=master) [![Dependency Status](https://david-dm.org/diasdavid/js-peer-id.svg?style=flat-square)](https://david-dm.org/ipfs/js-ipfs-repo)
 [![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg?style=flat-square)](https://github.com/feross/standard)
 
@@ -196,4 +196,3 @@ This repository falls under the IPFS [Code of Conduct](https://github.com/ipfs/c
 ## License
 
 [MIT](LICENSE)
-