How to make use of app(unstable structure) folder in ionic 2 inside the stable version

I have update my ionic 2 version to stable.

After giving ionic start myProject blank --v2 i am getting the folder structure like ionic 1. take a look at the folder structure i got.

here is my ionic info command result

Cordova CLI: 6.3.0
Ionic CLI Version: 2.1.0
Ionic App Lib Version: 2.1.0-beta.1
OS: Distributor ID: Ubuntu Description: Ubuntu 16.04.1 LTS 
Node Version: v4.2.6

here is my package.json file

{
  "name": "ionic-hello-world",
  "author": "Ionic Framework",
  "homepage": "http://ionicframework.com/",
  "private": true,
  "scripts": {
    "build": "ionic-app-scripts build",
    "watch": "ionic-app-scripts watch",
    "serve:before": "watch",
    "emulate:before": "build",
    "deploy:before": "build",
    "build:before": "build",
    "run:before": "build"
  },
  "dependencies": {
    "ionic-angular": "^2.0.0-rc.0",
    "ionicons": "^3.0.0",
    "@ionic/storage": "^1.0.3",
    "ionic-native": "^2.0.3"
  },
  "devDependencies": {
    "@ionic/app-scripts": "^0.0.23",
    "typescript": "^2.0.3"
  },
  "description": "myProject: An Ionic project",
  "cordovaPlugins": [
    "cordova-plugin-device",
    "cordova-plugin-console",
    "cordova-plugin-whitelist",
    "cordova-plugin-splashscreen",
    "cordova-plugin-statusbar",
    "ionic-plugin-keyboard"
  ],
  "cordovaPlatforms": []
}

Questions:

After updating my ionic 2 and try to create a project when i see the structure i am not able to see my app folder. why ???

when i give ionic serve --lab command i believe i am getting index.html file loaded. if so how my indicate my unstable app folder to the existing(updated stable version) project

can any one reefer me to understand the structure. i believe it is similar to the ionic 1. but i have completed my project into ionic 2(unstable). but now the structure is different. so how can i make use of it.

Solution

After following the https://github.com/driftyco/ionic/blob/master/CHANGELOG.md#steps-to-upgrade-to-rc0

i am able to solve my issue