Fixed failing HasDebuggerDisplayAttribute tests

Octokit/Models/Request/GistFileUpdate.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Diagnostics;
+using System.Globalization;
+
+namespace Octokit
+{
+    [DebuggerDisplay("{DebuggerDisplay,nq}")]
+    public class GistFileUpdate
+    {
+        public string NewFileName { get; set; }
+
+        public string Content { get; set; }
+
+        internal string DebuggerDisplay
+        {
+            get { return String.Format(CultureInfo.InvariantCulture, "NewFileName: {0}", NewFileName); }
+        }
+    }
+}