Merge pull request #43 from xvw/patch-1

Fix the paper link

README.md

@@ -3,7 +3,7 @@ Plumtree
 
 [![Build Status](https://travis-ci.org/helium/plumtree.svg?branch=master)](https://travis-ci.org/helium/plumtree)
 
-Plumtree is an implementation of [Plumtree](http://www.gsd.inesc-id.pt/~jleitao/pdf/srds07-leitao.pdf), the epidemic broadcast protocol.  It is extracted from the implementation in [Riak Core](https://github.com/basho/riak_core). Instead of the riak_core ring and riak's ring gossip protocol, it includes a standalone membership gossip, built around the [Riak DT](https://github.com/basho/riak_dt) [ORSWOT](http://haslab.uminho.pt/cbm/files/1210.3368v1.pdf).
+Plumtree is an implementation of [Plumtree](http://asc.di.fct.unl.pt/~jleitao/pdf/srds07-leitao.pdf), the epidemic broadcast protocol.  It is extracted from the implementation in [Riak Core](https://github.com/basho/riak_core). Instead of the riak_core ring and riak's ring gossip protocol, it includes a standalone membership gossip, built around the [Riak DT](https://github.com/basho/riak_dt) [ORSWOT](http://haslab.uminho.pt/cbm/files/1210.3368v1.pdf).
 
 More information on the plumtree protocol and it's history we encourage you to watch Jordan West's [RICON West 2013 talk](https://www.youtube.com/watch?v=s4cCUTPU8GI) and Joao Leitao & Jordan West's [RICON 2014 talk](https://www.youtube.com/watch?v=bo367a6ZAwM).