botBanner = [[GADBannerView alloc] initWithAdSize:GADAdSizeFullWidthPortraitWithHeight(50)];
botBanner.adUnitID = kGADKey;
botBanner.delegate = self;
botBanner.rootViewController = self;
[_adBannerBotView addSubview:botBanner];

adRequest = [GADRequest request];

// Make the request for a test ad. Put in an identifier for
// the simulator as well as any devices you want to receive test ads.
adRequest.testDevices = [NSArray arrayWithObjects:@"<I add my device id>", GAD_SIMULATOR_ID, nil];
[botBanner loadRequest:adRequest];