title: How to solve error of installing Xamarin Google Play Services - GCM?
body: <p>Severity    Code    Description Project File    Line    Suppression State
  Error       Could not install package 'Xamarin.GooglePlayServices.Gcm 42.1001.0'. You are trying to install this package into a project that targets 'MonoAndroid,Version=v6.0', but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author.           0   </p>