Add comments and debugger display

Octokit/Models/Response/OauthToken.cs

@@ -1,11 +1,37 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Globalization;
 
 namespace Octokit
 {
+    [DebuggerDisplay("{DebuggerDisplay,nq}")]
     public class OauthToken
     {
+        /// <summary>
+        /// The type of OAuth token
+        /// </summary>
         public string TokenType { get; set; }
+
+        /// <summary>
+        /// The secret OAuth access token. Use this to authenticate Octokit.net's client.
+        /// </summary>
         public string AccessToken { get; set; }
+
+        /// <summary>
+        /// The list of scopes the token includes.
+        /// </summary>
         public IReadOnlyCollection<string> Scope { get; set; }
+
+        internal string DebuggerDisplay
+        {
+            get
+            {
+                return String.Format(CultureInfo.InvariantCulture, "TokenType: {0}, AccessToken: {1}, Scopes: {2}",
+                    TokenType,
+                    AccessToken,
+                    Scope);
+            }
+        }
     }
 }