- (void)viewDidLoad
{
    // Load data in background while displaying an activity indicator
    NSLog(@"start HUD progress");
    HUD = [[MBProgressHUD alloc] initWithView:self.navigationController.view];
    [self.navigationController.view addSubview:HUD];

    HUD.delegate = self;
    HUD.labelText = @"Loading";

    [HUD showWhileExecuting:@selector(loadDataFromWeb) onTarget:self withObject:nil animated:YES];
}