Migration to Vert.x 3

Initial work on migrating this module to vertex 3 includes:

* Updating API
* Removal of module building
* Update of examples
* Removal of deprecated classes
Important change. Vertx now uses jackson 2.4.x. Jersey used jackson 2.3.x. I bumped to version to 2.4.x and it worked. There is no newer jersey version which used 2.4.x