Showcase for AddApptr app for iPhone and iPad

AddApptr offers a mediation service for mobile advertisement. This app demonstrates various supported ad formats and their potential integration into an app.

The app features:
* A start-up interstitial
* Various banner formats presented in a feed-like user interface
* A sticky bottom banner use case
* Native ads, a more dynamic ad format, consisting of separate components, presented in a feed-like user interface
* Video ads, as a demonstration for a more engaging ad experience