Hi Ayman,
Unfortunately, the presentation is outdated and not relevant for current code base. It needs to be updated for the phonegap build. The presentation actually follows this tutorial which is no longer relevant.
If you are aware of general ionic build, you can build it using ionic, the app is packaging well via the ionic build. You first need to setup the development environment by following this tutorial and then just do a normal ionic build for Android(needs android studio installed) and iOS(needs Mac).
Cheers,
Diwakar