Tools are working

chapter11/App.original.js

@@ -0,0 +1,23 @@
+import React from "react";
+import { StyleSheet, Text, View } from "react-native";
+
+export default class App extends React.Component {
+    render() {
+        return (
+            <View style={styles.container}>
+                <Text>Open up App.js to start working on your app!</Text>
+                <Text>Changes you make will automatically reload.</Text>
+                <Text>Shake your phone to open the developer menu.</Text>
+            </View>
+        );
+    }
+}
+
+const styles = StyleSheet.create({
+    container: {
+        flex: 1,
+        backgroundColor: "#fff",
+        alignItems: "center",
+        justifyContent: "center"
+    }
+});