React Native - Tappy Button

TappyButtonApp.js

/**
 * @providesModule TappyButtonApp
 * @flow
 */
'use strict';

var React = require('react-native/addons');
var {
  Bundler,
  StyleSheet,
  View,
  Text,
  TouchableHighlight,
} = React;

var TappyButtonApp = React.createClass({
  getInitialState() {
    return {
      score: 0
    }
  },
  render() {
    return (
      <View style={styles.container}>
        <Text style={styles.label}>{'Score: ' + this.state.score}</Text>
        <TouchableHighlight
          activeOpacity={0.6}
          underlayColor={'white'}
          onPress={() => this.setState({score: ++this.state.score})}>
          <Text style={styles.button}>Tap</Text>
        </TouchableHighlight>
      </View>
   );
  }
});

var styles = StyleSheet.create({
  container: {
    backgroundColor: 'white',
    flex: 1,
    flexDirection: 'column',
    justifyContent: 'center',
    alignItems: 'center'
  },
  button: {
    color: 'blue'
  },
  label: {
    marginBottom: 30
  }
});

Bundler.registerComponent('TappyButtonApp', () => TappyButtonApp);

module.exports = TappyButtonApp;