Updated URL-template for couchdb-lucene >= 1.0

Some days ago couchdb-lucene 1.0 was released and i think it brought some changes to the Proxy/Api URL structure as you can see in my small patch. The code above worked for my setup (CouchDB 1.5.0 & couchdb-lucene 1.0 & CouchDB-Client & CouchDB-ODM).