Wait, what? AdMob is supported now? Not just through Mopub like in the past?
From Ludie
"Below there is a list of supported ad networks at this time. We support all this networks using MoPub as network mediator, so the first thing you will need is a MoPub account to manage which networks you want to integrate in your app and how they will rotate."
Now if they have direct admob support, then awesome. Doesn't sound like it though.