Merge pull request #2 from googleanalytics/quickstart

docs: added README

Author: ikuleshov

analytics-admin/README.md

@@ -0,0 +1,11 @@
+# .NET Google Analytics Admin API Samples
+
+A collection of samples that demonstrate how to call the
+[Google Analytics Admin
+API](https://developers.google.com/analytics/trusted-testing/analytics-admin/) from C#.
+
+This sample requires [.NET Core 2.0](
+    https://www.microsoft.com/net/core) or later.  That means using
+[Visual Studio 2017](
+    https://www.visualstudio.com/), or the command line.
+