document the buildable and country trait

OpenRA.Game/Traits/World/Country.cs

@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2011 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2014 The OpenRA Developers (see AUTHORS)
  * This file is part of OpenRA, which is free software. It is made
  * available to you under the terms of the GNU General Public License
  * as published by the Free Software Foundation. For more information,
@@ -12,8 +12,12 @@ namespace OpenRA.Traits
 {
 	public class CountryInfo : TraitInfo<Country>
 	{
+		[Desc("This is the name exposed to the players.")]
 		public readonly string Name = null;
+
+		[Desc("This is the internal name for owner checks.")]
 		public readonly string Race = null;
+
 		public readonly bool Selectable = true;
 	}