Update icons in playground app and add some padding to banner

packages/react-navigation/examples/NavigationPlayground/app.json

@@ -7,10 +7,9 @@
     "privacy": "public",
     "orientation": "portrait",
     "primaryColor": "#cccccc",
-    "icon": "./assets/icons/react-navigation.png",
-    "loading": {
-      "icon": "./assets/icons/react-navigation.png",
-      "hideExponentText": false
+    "icon": "./assets/icons/icon.png",
+    "splash": {
+      "image": "./assets/icons/splash.png"
     },
     "sdkVersion": "24.0.0",
     "entryPoint": "./node_modules/react-native-scripts/build/bin/crna-entry.js",

packages/react-navigation/examples/NavigationPlayground/js/Banner.js

@@ -8,7 +8,7 @@ import { SafeAreaView } from 'react-navigation';
 const Banner = () => (
   <SafeAreaView
     style={styles.bannerContainer}
-    forceInset={{ vertical: 'never' }}
+    forceInset={{ top: 'always' }}
   >
     <View style={styles.banner}>
       <Image source={require('./assets/NavLogo.png')} style={styles.image} />