Added external library SVProgressHUD to the project.
Updated APIService methods
Added new controller (GreetingsViewController) to show that your notification has already been sent.
Deleted unneeded brand new controller
Updated MQSVNotification class.
Added tag key on AppConfiguration file.
Updated MQSVRequest class with removed methods and changed the formParameterString.
Updated NotificationViewController class.
Updated the ViewController and completed the API service call.
Updated UI on controllers with components and with methods assignation.