Added comments

Owin.Security.Providers/Wargaming/WargamingAccountAuthenticationExtensions.cs

@@ -3,8 +3,17 @@ using System;
 
 namespace Owin.Security.Providers.Wargaming
 {
+    /// <summary>
+    /// Extension methods for using <see cref="WargamingAuthenticationMiddleware"/>
+    /// </summary>
     public static class WargamingAccountAuthenticationExtensions
     {
+        /// <summary>
+        /// Authenticate users using Wargaming
+        /// </summary>
+        /// <param name="app">The <see cref="IAppBuilder"/> passed to the configuration method</param>
+        /// <param name="options">Middleware configuration options</param>
+        /// <returns>The updated <see cref="IAppBuilder"/></returns>
         public static IAppBuilder UseWargamingAccountAuthentication(this IAppBuilder app, WargamingAuthenticationOptions options)
         {
             if (app == null)

Owin.Security.Providers/Wargaming/WargamingAuthenticationHandler.cs

@@ -5,14 +5,11 @@ using System.Collections.Generic;
 using System.Net.Http;
 using System.Security.Claims;
 using System.Text.RegularExpressions;
-using Newtonsoft.Json.Converters;
-using System.Data;
 
 namespace Owin.Security.Providers.Wargaming
 {
     internal sealed class WargamingAuthenticationHandler : OpenIDAuthenticationHandlerBase<WargamingAuthenticationOptions>
     {
-
         private readonly Regex AccountIDRegex = new Regex(@"^https://na.wargaming.net/id/([0-9]{10}).*$", RegexOptions.Compiled);
 
         private const string UserInfoUri = "https://api.worldoftanks.com/wot/account/info/?application_id={0}&account_id={1}&fields=nickname";

Owin.Security.Providers/Wargaming/WargamingAuthenticationMiddleware.cs

@@ -11,6 +11,9 @@ using Owin.Security.Providers.OpenID;
 
 namespace Owin.Security.Providers.Wargaming
 {
+    /// <summary>
+    /// OWIN middleware for authenticating users using an OpenID provider
+    /// </summary>
     public class WargamingAuthenticationMiddleware : OpenIDAuthenticationMiddlewareBase<WargamingAuthenticationOptions>
     {
 

Owin.Security.Providers/Wargaming/WargamingAuthenticationOptions.cs

@@ -10,7 +10,9 @@ namespace Owin.Security.Providers.Wargaming
 {
     public class WargamingAuthenticationOptions : OpenIDAuthenticationOptions
     {
-
+        /// <summary>
+        /// Region to use for to log in
+        /// </summary>
         public enum Region
         {
             Europe,