message: Added alt tag to bar button
diff: @@ -4,7 +4,7 @@ import { Image, Text, TouchableOpacity } from 'react-native';
  const BarButton = ({title, image, testID, onPress}) => (
  <TouchableOpacity testID={testID} onPress={onPress} style={{marginStart: 24}}>
  {image
  - ? <Image source={image} style={{width: 24, height: 24}} />
  + ? <Image source={image} style={{width: 24, height: 24}} accessibilityLabel={title} />
  : <Text>{title}</Text>}
  </TouchableOpacity>
  );
  