AdMob as ad mediation platform in Unity 5

I posted this originally on reddit in /r/Unity3D and /r/anddev, here is the link: Reddit - Dive into anything

If this is the wrong forum or if this is more suitable for Unity Answers please let me know abd I’ll change it.

Need help with setting AdMob as a mediation platform in Unity

Hello devs!
After finishing a small mobile game I’m ready to upload it to Google Play, App Store and other stores like Playphone.
Before doing that, I need to finish setting up my Ad Networks and I’m a complete rookie on that subject.
I have successfully integrated UntiyAds, AdMob and AdColony as standalone systems.
Now, I want to use AdMob as a mediation platform for AdColony (and in time add some other networks).
In this link: Get started  |  Android  |  Google for Developers, there’s documentation for each Ad Network supported by AdMob.
I don’t seem to be able to follow AdColony’s integration process since what appears in the documentation is not valid for Unity.
After googling around, I haven’t found any specific guide on how to set this up and I can’t get around on how to do it.
Assuming I just want to set this up for Android:

  • Is there any reference documentation somewhere on how to do this in Unity?
  • What do I have to include in my project besides de Google Mobile Ads Plugin and Google Play Services?
  • Do I have to include the Unity AdColony Plugin or do I have to include the AdMob AdColony adapter? Or both?
  • Do I have to code AdColony configuration in my project or just setting it up in AdMob’s dashboard is enough?
  • Do I have to upload my game to the store in order to test mediation or can I use test ads and test devices for this?
  • On Ad Mob, my AdColony eCPM appears as “Pending”. Does this mean that it will not show AdColony ads?
  • Finally, can I use these Ad Networks on other non-mainstream stores like Playphone?

Thanks in advance for taking the time to read and for any help you can give me.

Is there any reference documentation somewhere on how to do this in Unity https://github.com/unity-plugins/Unity-Admob