Xamarin.Forms-Samples/AdaptTablet/packages/repositories.config

<?xml version="1.0" encoding="utf-8"?>
<repositories>
  <repository path="../AdaptTablet.ErgastAPI/packages.config" />
  <repository path="../AdaptTablet/AdaptTablet.Droid/packages.config" />
  <repository path="../AdaptTablet/AdaptTablet.iOS/packages.config" />
  <repository path="../AdaptTablet/AdaptTablet/packages.config" />
</repositories>