Delay BrandInfo sending

Implement Game Join event and send Brand Info only when server
acknowledged game join, as ZizzyDizzyMC did before, else server may
generate an invalid packet error because it was still in "login" mode
and not in "playing" mode. Fix second issue in #95

MinecraftClient/McTcpClient.cs

@@ -120,9 +120,6 @@ namespace MinecraftClient
                 {
                     if (handler.Login())
                     {
-                        if (!String.IsNullOrWhiteSpace(Settings.BrandInfo))
-                            handler.SendBrandInfo(Settings.BrandInfo.Trim());
-
                         if (singlecommand)
                         {
                             handler.SendChatMessage(command);
@@ -322,6 +319,16 @@ namespace MinecraftClient
                 client.Close();
         }
 
+        /// <summary>
+        /// Called when a server was successfully joined
+        /// </summary>
+
+        public void OnGameJoined()
+        {
+            if (!String.IsNullOrWhiteSpace(Settings.BrandInfo))
+                handler.SendBrandInfo(Settings.BrandInfo.Trim());
+        }
+
         /// <summary>
         /// Received some text from the server
         /// </summary>

MinecraftClient/Protocol/Handlers/Protocol18.cs

@@ -139,6 +139,9 @@ namespace MinecraftClient.Protocol.Handlers
                     case 0x00: //Keep-Alive
                         SendPacket(0x00, packetData);
                         break;
+                    case 0x01: //Join game
+                        handler.OnGameJoined();
+                        break;
                     case 0x02: //Chat message
                         string message = readNextString(ref packetData);
                         try

MinecraftClient/Protocol/IMinecraftComHandler.cs

@@ -23,6 +23,12 @@ namespace MinecraftClient.Protocol
         string GetSessionID();
         string[] GetOnlinePlayers();
 
+        /// <summary>
+        /// Called when a server was successfully joined
+        /// </summary>
+
+        void OnGameJoined();
+
         /// <summary>
         /// This method is called when the protocol handler receives a chat message
         /// </summary>