Thank you for the comment. I'm interested in this type of informations too. Can you link a page where it's explained the folder structure of Ionic 2? (or explain by yourself if you are up to).
I just found http://ionicframework.com/docs/v1/concepts/structure.html (v1) where "WWW is where your app is developed and where you’ll spend most of your time when building an Ionic app".
I'm assuming that with v2 something changed so during developing i haven't to modify the www folder?
A question: After creating a new blank app, I saw in app.components.Ts rootPage:any = HomePage; so the start page is the home.html. Then what is the real utility of having also index.html?