I'm am trying to integrate google+ in untiy5 for a andriod app. however I needed some direction. I have three links and I don't know which one should I be following
1.https://developers.google.com/+/web/samples/csharp (this seems it is only for web base application)
or
2.http://docs.unity3d.com/Manual/PluginsForAndroid.html(Write my own plugins which does not make sense)
or
3.https://developers.google.com/identity/sign-in/android/start-integrating(that's for android studio so don't know how to apply in unity)
or if I'm going to the wrong direction please feel free to tell me
thanks