upgrade (#324)

docs/tutorial.md

@@ -18,7 +18,10 @@ import { Text } from 'react-native';
 export default class HelloWorldApp extends Component {
   render() {
     return (
+    <View>
       <Text>Hello world!</Text>
+    </View>
+      
     );
   }
 }
@@ -32,7 +35,7 @@ Some of the things in here might not look like JavaScript to you. Don't panic. _
 
 First of all, ES2015 (also known as ES6) is a set of improvements to JavaScript that is now part of the official standard, but not yet supported by all browsers, so often it isn't used yet in web development. React Native ships with ES2015 support, so you can use this stuff without worrying about compatibility. `import`, `from`, `class`, and `extends` in the example above are all ES2015 features. If you aren't familiar with ES2015, you can probably pick it up just by reading through sample code like this tutorial has. If you want, [this page](https://babeljs.io/learn-es2015/) has a good overview of ES2015 features.
 
-The other unusual thing in this code example is `<Text>Hello world!</Text>`. This is JSX - a syntax for embedding XML within JavaScript. Many frameworks use a special templating language which lets you embed code inside markup language. In React, this is reversed. JSX lets you write your markup language inside code. It looks like HTML on the web, except instead of web things like `<div>` or `<span>`, you use React components. In this case, `<Text>` is a built-in component that just displays some text.
+The other unusual thing in this code example is `<View><Text>Hello world!</Text></View>`. This is JSX - a syntax for embedding XML within JavaScript. Many frameworks use a special templating language which lets you embed code inside markup language. In React, this is reversed. JSX lets you write your markup language inside code. It looks like HTML on the web, except instead of web things like `<div>` or `<span>`, you use React components. In this case, `<Text>` is a built-in component that just displays some text and `View` is like the `<div>` or `<span>`.
 
 ## Components