Getting started on #1030

Octokit/Clients/IUserAdministrationClient.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Octokit
+{    /// <summary>
+     /// A client for GitHub's User Administration API.
+     /// </summary>
+     /// <remarks>
+     /// See the <a href="https://developer.github.com/v3/users/administration/">Administration API documentation</a> for more details.
+     /// </remarks>
+    interface IUserAdministrationClient
+    {
+        /// <summary>
+        /// Promotes ordinary user to a site administrator.
+        /// </summary>
+        /// <remarks>
+        /// https://developer.github.com/v3/users/administration/#promote-an-ordinary-user-to-a-site-administrator
+        /// </remarks>
+        /// <param name="login">The user to promote to administrator.</param>
+        /// <returns></returns>
+        Task Promote(string login);
+       
+    }
+}

Octokit/Octokit.csproj

@@ -63,6 +63,7 @@
     <Compile Include="Clients\IRepositoryCommitsClient.cs" />
     <Compile Include="Clients\IRepositoryDeployKeysClient.cs" />
     <Compile Include="Clients\IRepositoryPagesClient.cs" />
+    <Compile Include="Clients\IUserAdministrationClient.cs" />
     <Compile Include="Clients\IUserKeysClient.cs" />
     <Compile Include="Clients\MergingClient.cs" />
     <Compile Include="Clients\OAuthClient.cs" />