Update project structure

* Add examples
* Add maven site
* Add documentation
* Add changelog
* Update api to support vert.x 3.x
* Update configuration
* Removal of no longer needed files due to vert.x 3.x update
* Fix cluster mode / usage of embedded neo4j
* Add todo list
Merge pull request #4 from Jotschi/structure-update

Update project structure, lots of changes.