RESTful Cypher query, two tests passing.
Added restUrl setting to neo4vertx.conf, added to Configuration.
First refactoring to move neo4vertx to one message type: query.
Changed mode names to more understandable default/cluster/remote. Theoretically implemented remote mode.
Completed unit tests.
Merge pull request #3 from rubin55/master

Huge overhaul, obsoletion of Nodes, Relationships, Complex in favour of Query