I\'m sure this is a stupid question, but I can\'t find a link anywhere and their wiki just says \"Copy the AdMob Jar file into that libs directory.\" but not where to get it.
A much simpler way is to go to : Google AdMob Ads SDK Downloads.You will get the latest copy of Google AdMob SDK.
For Android Studio:
compile 'com.google.android.gms:play-services:4.0.30'