title: how to make ZBarReaderViewController fullScreen
body: <p>I want to make my <code>ZBarReaderViewController</code> full screen.
  I use this code:</p>
  
  <pre><code>_reader = [ZBarReaderViewController new];
  _reader.readerDelegate = self;
  _reader.videoQuality = UIImagePickerControllerQualityTypeHigh;
  _reader.readerView.showsFPS = YES;
  _reader.readerView.allowsPinchZoom = YES;
  _reader.showsCameraControls = NO;
  _reader.showsZBarControls = NO;
  _reader.navigationController.navigationBarHidden = NO;
  _reader.wantsFullScreenLayout = YES;
  CGAffineTransform translate = CGAffineTransformMakeTranslation(0.0, 0.0);
  _reader.cameraViewTransform = translate;        
  CGAffineTransform scale = CGAffineTransformScale(translate, 1.5, 1.5);
  _reader.cameraViewTransform = scale;
  [_reader.scanner setSymbology: ZBAR_I25 config: ZBAR_CFG_ENABLE to: 0]; 
  [self presentModalViewController:_reader animated:YES];
  </code></pre>
  
  <p>but result reader View is not display as full screen as I expected.
  Please help me.
  Thanks.</p>