Added missing doc comments

src/Microsoft.AspNet.Localization/CustomRequestCultureStrategy.cs

@@ -7,15 +7,23 @@ using Microsoft.Framework.Internal;
 
 namespace Microsoft.AspNet.Localization
 {
+    /// <summary>
+    /// Determines the culture information for a request via the configured delegate.
+    /// </summary>
     public class CustomRequestCultureStrategy : IRequestCultureStrategy
     {
         private readonly Func<HttpContext, RequestCulture> _strategy;
 
+        /// <summary>
+        /// Creates a new <see cref="CustomRequestCultureStrategy"/> using the specified delegate.
+        /// </summary>
+        /// <param name="strategy">The strategy delegate.</param>
         public CustomRequestCultureStrategy([NotNull] Func<HttpContext, RequestCulture> strategy)
         {
             _strategy = strategy;
         }
 
+        /// <inheritdoc />
         public RequestCulture DetermineRequestCulture([NotNull] HttpContext httpContext)
         {
             return _strategy(httpContext);

src/Microsoft.AspNet.Localization/IRequestCultureStrategy.cs

@@ -5,6 +5,9 @@ using Microsoft.AspNet.Http;
 
 namespace Microsoft.AspNet.Localization
 {
+    /// <summary>
+    /// Represents a strategy for determining the culture information of an <see cref="HttpRequest"/>.
+    /// </summary>
     public interface IRequestCultureStrategy
     {
         RequestCulture DetermineRequestCulture(HttpContext httpContext);