Add closing brackets

Add closing brackets for example code

README.md

@@ -37,7 +37,7 @@ npm i react-native-router-flux --save
 import {Actions, Scene, Router} from 'react-native-router-flux';
 
 class App extends React.Component {
-    render(){
+    render() {
         return <Router>
             <Scene key="root">
                 <Scene key="login" component={Login} title="Login"/>
@@ -46,6 +46,7 @@ class App extends React.Component {
             </Scene>
         </Router>
     }
+}
 ```
 Alternatively you could define all your scenes during compile time and use it later within Router:
 ```
@@ -58,9 +59,10 @@ const scenes = Actions.create(
 );
 ///
 class App extends React.Component {
-    render(){
+    render() {
         return <Router scenes={scenes}/>
     }
+}
 ```
 
 2. In any app screen: