NotificationService
Added /**
	 * Unsubscribes a Client
	 *
	 * @param clientToRemove is a Client object
	 */
	public void removeSubscriber(Client clientToRemove) {
		this.allClients.remove(clientToRemove);
	} and Javadoc comments
NotificationServiceTest
Added /**
	 * Unsubscribes a Client
	 *
	 * @param clientToRemove is a Client object
	 */
	public void removeSubscriber(Client clientToRemove) {
		this.allClients.remove(clientToRemove);
	}

Signed-off-by: bhill2 <bjsrhill@gmail.com>