Google Play Services problem

Hi guys, sorry for question, but i cant find any solution for this

Im trying to implement play services into my game. I installed this plugin:

I did everything what is in guide, but when I want to use scripts for using services I get error when using:

using GooglePlayGames;

And error is:
Assets/Standard Assets/Scripts/Banner_Int.cs(1,7): error CS0246: The type or namespace name `GooglePlayGames’ could not be found. Are you missing an assembly reference?

I was using services long time ago and I remember, that we need to copy google-play-services-lib into project, but now it seems it do it automatically (even I cant see any folder for that)

Please help guys, I cant use Admob, Play services because of it


Sometime happens with Unity
try to create a new empty project.
import play service and test