Add comments todescribe the uses of various classes.

Nibriboard/Client/NibriClient.cs

@@ -13,6 +13,9 @@ using RippleSpace;
 
 namespace Nibriboard.Client
 {
+	/// <summary>
+	/// Represents a single client connected to the ripple-space on this Nibriboard server.
+	/// </summary>
 	public class NibriClient
 	{
 		private static int nextId = 1;

Nibriboard/Client/NibriClientManager.cs

@@ -6,6 +6,9 @@ using System.Diagnostics;
 
 namespace Nibriboard.Client
 {
+	/// <summary>
+	/// Manages a group of <see cref="Nibriboard.Client.NibriClient"/>s.
+	/// </summary>
 	public class NibriClientManager : IWebSocketRequestHandler
 	{
 		private ClientSettings clientSettings;

Nibriboard/NibriboardServer.cs

@@ -9,6 +9,10 @@ using Nibriboard.Client;
 
 namespace Nibriboard
 {
+	/// <summary>
+	/// The main Nibriboard server.
+	/// This class manages not only the connected clients, but also holds the master reference to the <see cref="Nibriboard.RippleSpace.RippleSpaceManager"/>.
+	/// </summary>
 	public class NibriboardServer
 	{
 		private HttpServer httpServer;