Sample project to experiment with Promises vs Callbacks, Alamofire, Moya and RxSwift
See http://www.gfrigerio.com/callbacks-vs-promises/ for Promises
See http://www.gfrigerio.com/getting-started-with-rxswift/ for RxSwift
See http://www.gfrigerio.com/moya-and-alamofire/ for Moya and Alamofire