Added WebView to example app

WebTest/App.js

 
 import React, { Component } from 'react';
 import { Platform, StyleSheet, Text, View } from 'react-native';
+import { WebView } from 'react-native-webview'
 
 const instructions = Platform.select({
   ios: 'Press Cmd+R to reload,\n' + 'Cmd+D or shake for dev menu',
     return (
       <View testID="welcome" style={styles.container}>
         <Text style={styles.welcome}>Welcome to React Native!</Text>
-        <Text style={styles.instructions}>To get started, edit App.js</Text>
-        <Text style={styles.instructions}>{instructions}</Text>
+        <WebView
+          testID="testWebView"
+          style={styles.webview}
+          src={{ uri: "https://www.facebook.com/Engineering/" }}
+        />
       </View>
     );
   }
     textAlign: 'center',
     margin: 10,
   },
-  instructions: {
-    textAlign: 'center',
-    color: '#333333',
+  webview: {
     marginBottom: 5,
   },
 });