Fix badges

Author: ZenGround0

README.md

@@ -1,9 +1,7 @@
 go-hamt-ipld
 ==================
 
-[![](https://img.shields.io/badge/made%20by-Protocol%20Labs-blue.svg?style=flat-square)](http://ipn.io)
-[![](https://img.shields.io/badge/project-IPFS-blue.svg?style=flat-square)](http://libp2p.io/)
-[![](https://img.shields.io/badge/freenode-%23ipfs-blue.svg?style=flat-square)](http://webchat.freenode.net/?channels=%23ipfs)
+[![](https://img.shields.io/badge/made%20by-Protocol%20Labs-blue.svg?style=flat-square)](https://protocol.ai/)
 [![Travis CI](https://travis-ci.org/filecoin-project/go-hamt-ipld.svg?branch=master)](https://travis-ci.org/filecoin-project/go-hamt-ipld)
 
 **This package is a reference implementation of the IPLD HAMT used in the