Implement observable repository content client

Octokit/Models/Response/RepositoryContentChangeSet.cs

@@ -1,10 +1,13 @@
-namespace Octokit
+using System.Diagnostics;
+
+namespace Octokit
 {
     /// <summary>
     /// The response from the Repository Contents API. The API assumes a dynamic client type so we need
     /// to model that.
     /// </summary>
     /// <remarks>https://developer.github.com/v3/repos/contents/</remarks>
+    [DebuggerDisplay("{DebuggerDisplay,nq}")]
     public class RepositoryContentChangeSet
     {
         /// <summary>
@@ -16,5 +19,10 @@
         /// The commit information for the content change.
         /// </summary>
         public Commit Commit { get; set; }
+
+        internal string DebuggerDisplay
+        {
+            get { return Content.DebuggerDisplay; }
+        }
     }
 }