I created a new app under RC0 (ionic start --v2 myApp) and all went well but I noticed that the app_id in ionic.config.json is an empty string. Since I a migrating an Ionic 2 beta project, I just moved its app_id over, but what if I were creating a new project? Shouldn’t it have gotten an app_id automagically?
Nope it shouldn’t. You should generate one using the ionic CLI