Implementing the rest of the Notifications API

Octokit/Http/IApiConnection.cs

@@ -142,6 +142,13 @@ namespace Octokit
         /// <exception cref="ApiException">Thrown when an API error occurs.</exception>
         Task<T> Put<T>(Uri uri, object data, string twoFactorAuthenticationCode);
 
+        /// <summary>
+        /// Updates the API resource at the specified URI.
+        /// </summary>
+        /// <param name="uri">URI of the API resource to patch</param>
+        /// <returns>A <see cref="Task"/> for the request's execution.</returns>
+        Task Patch(Uri uri);
+
         /// <summary>
         /// Updates the API resource at the specified URI.
         /// </summary>