How can I install Xamarin.Android.Support.Design SDK

I had Xamarin.Forms 1.3 and I updated the Nuget package to V1.5 but my project won't compile

Error Unzipping failed. Please download https://dl-ssl.google.com/android/repository/android_m2repository_r20.zip and extract it to the AppData\Local\Xamarin\Android.Support.Design\23.0.1\content directory.....
Severity Code Description Project File Line
Error Please install package: 'Xamarin.Android.Support.Design' available in SDK installer. Java library file \AppData\Local\Xamarin\Android.Support.Design\23.0.1\embedded\classes.jar doesn't exist. ....
In SDK Manager I do not see Xamarin.Android.Support.Design

Can you help?