update example with latest RN

example/Btn.js

 //@flow
-import React, {
-  Component,
-  PropTypes,
-} from "react";
-import {
-  Text,
-  TouchableOpacity,
-  StyleSheet,
-} from "react-native";
+import React, { Component } from "react";
+import PropTypes from "prop-types";
+import { Text, TouchableOpacity, StyleSheet } from "react-native";
 
 const styles = StyleSheet.create({
   root: {
     color: "#36f",
     borderWidth: 1,
     borderColor: "#36f",
-    fontSize: 12,
+    fontSize: 12
   }
 });
 
 export default class Btn extends Component {
   static propTypes = {
     onPress: PropTypes.func.isRequired,
-    label: PropTypes.string.isRequired,
+    label: PropTypes.string.isRequired
   };
-  render () {
+  render() {
     const { onPress, label } = this.props;
     return (
       <TouchableOpacity onPress={onPress}>
-        <Text style={styles.root}>
-          {label}
-        </Text>
+        <Text style={styles.root}>{label}</Text>
       </TouchableOpacity>
     );
   }

example/package.json

     "ios": "react-native run-ios"
   },
   "dependencies": {
-    "gl-react": "^2.2.10",
+    "gl-react": "^2.3.1",
     "gl-react-native": "^2.47.0",
     "lodash": "4.17.4",
-    "react": "16.0.0-alpha.12",
-    "react-native": "^0.47.0",
+    "prop-types": "^15.6.0",
+    "react": "^16.0.0",
+    "react-native": "^0.49.0",
     "react-native-maps": "^0.16.2",
     "react-native-svg": "^5.4.1",
     "react-native-svg-uri": "github:gre/react-native-svg-uri#onLoad",