chore: Add FOSSA badge/report (#543)

Author: xizhao

README.md

@@ -9,6 +9,7 @@ ipfs-api
 [![Dependency Status](https://david-dm.org/ipfs/js-ipfs-api.svg?style=flat-square)](https://david-dm.org/ipfs/js-ipfs-api)
 [![Travis CI](https://travis-ci.org/ipfs/js-ipfs-api.svg?branch=master)](https://travis-ci.org/ipfs/js-ipfs-api)
 [![Circle CI](https://circleci.com/gh/ipfs/js-ipfs-api.svg?style=svg)](https://circleci.com/gh/ipfs/js-ipfs-api)
+[![FOSSA Status](https://app.fossa.io/api/projects/git%2Bhttps%3A%2F%2Fgithub.com%2Fipfs%2Fjs-ipfs-api.svg?type=shield)](https://app.fossa.io/projects/git%2Bhttps%3A%2F%2Fgithub.com%2Fipfs%2Fjs-ipfs-api?ref=badge_shield)
 ![](https://img.shields.io/badge/npm-%3E%3D3.0.0-orange.svg?style=flat-square)
 ![](https://img.shields.io/badge/Node.js-%3E%3D4.0.0-orange.svg?style=flat-square)
 
@@ -404,3 +405,5 @@ This module started as a direct mapping from the go-ipfs cli to a JavaScript imp
 ## License
 
 [MIT](LICENSE)
+
+[![FOSSA Status](https://app.fossa.io/api/projects/git%2Bhttps%3A%2F%2Fgithub.com%2Fipfs%2Fjs-ipfs-api.svg?type=large)](https://app.fossa.io/projects/git%2Bhttps%3A%2F%2Fgithub.com%2Fipfs%2Fjs-ipfs-api?ref=badge_large)