gistfile1.js

'use strict';

var React = require('react-native');
var {
  AppRegistry,
  StyleSheet,
  Text,
  View,
  TouchableHighlight,
  Image,
  PixelRatio
} = React;

var Demo = React.createClass({
  render() {
    return (
      <Image source={{uri:"https://raw.githubusercontent.com/brentvatne/react-native-facebook-login/master/demo.gif"}} style={styles.image} />
    );
  }
});

var styles = StyleSheet.create({
  image: {
    flex: 1,
  },
});

AppRegistry.registerComponent('Demo', () => Demo);