Mention Vert.x integration as well

Author: Sanne

references.html.haml

@@ -34,6 +34,14 @@ title: References
 %p
   Hibernate Search can store its Lucene index in Infinispan to provide real time replication of the index.
 
+%a(name="vert.x")
+%h3 Vert.x
+%p
+  %a(href="http://vertx.io") http://vertx.io
+%p
+  Vert.x has an Infinispan Cluster Manager, able to delegate its clustering requirements to Infinispan.
+
+
 %a(name="teiid")
 %h3 Teiid
 %p