Introduction To Vert.x: Asynchronous Coordination

Confession time... I have written some REALLY messy code and taken on some technical deby. Let's refactor our code and use it as an opportunity to learn about Asynchronous Coordination (https://vertx.io/docs/vertx-core/java/#_async_coordination). https://github.com/InfoSec812/intro-to-vertx/tree/Async_Coordination