message: Toggled button text
diff: @@ -14,7 +14,7 @@ export default () => (
  <ScrollView contentInsetAdjustmentBehavior="automatic">
  <View style={styles.colors}>
  <UIBarButtonIOS title={title || "Hello"} onPress={() => {
  - stateNavigator.navigate('grid', {title: 'World'})
  + stateNavigator.navigate('grid', {title: title !== 'World' ? 'World' : 'Hello'})
  }} />
  <UIBarButtonIOS title="Again" />
  <UIBarButtonIOS title="And" />
  