readme: replace IPFS contrib links with libp2p

README.md

@@ -13,13 +13,13 @@ See https://godoc.org/github.com/libp2p/go-libp2p-kbucket.
 
 ## Contribute
 
-Feel free to join in. All welcome. Open an [issue](https://github.com/ipfs/go-key/issues)!
+Feel free to join in. All welcome. Open an [issue](https://github.com/libp2p/go-libp2p-kbucket/issues)!
 
-This repository falls under the IPFS [Code of Conduct](https://github.com/ipfs/community/blob/master/code-of-conduct.md).
+This repository falls under the libp2p [Code of Conduct](https://github.com/libp2p/community/blob/master/code-of-conduct.md).
 
 ### Want to hack on libp2p?
 
-[![](https://cdn.rawgit.com/jbenet/contribute-ipfs-gif/master/img/contribute.gif)](https://github.com/ipfs/community/blob/master/contributing.md)
+[![](https://cdn.rawgit.com/libp2p/community/master/img/contribute.gif)](https://github.com/libp2p/community/blob/master/CONTRIBUTE.md)
 
 ## License