dist/index.app is wrong-o 

In package.json we should see the following: 

```
"scripts": {
    "dev": "export NODE_ENV=development && webpack-dev-server --devtool eval --progress --colors --port=9000 --hot --content-base app",
    "test": "export NODE_ENV=test && karma start",
    "build": "export NODE_ENV=production && node node_modules/.bin/webpack && cp app/app.html dist/index.html"
  },
```
