Add admob sdk to android app (video player)

I want you to add admob sdk to this open source video player
https://github.com/moneytoo/Player

I'm expecting a native ad that shows up whenever you pouse the video, and interstitial ad that shows up before playing any video

please donwload their official demo to understand how this player works:
https://play.google.com/store/apps/details?id=com.brouken.player

and make sure to check out the source code at:
https://github.com/moneytoo/Player