Made Armor upgradable

OpenRA.Mods.Common/Traits/Armor.cs

@@ -13,10 +13,16 @@ using OpenRA.Traits;
 namespace OpenRA.Mods.Common.Traits
 {
 	[Desc("Used to define weapon efficiency modifiers with different percentages per Type.")]
-	public class ArmorInfo : TraitInfo<Armor>
+	public class ArmorInfo : UpgradableTraitInfo
 	{
 		public readonly string Type = null;
+
+		public override object Create(ActorInitializer init) { return new Armor(init.Self, this); }
 	}
 
-	public class Armor { }
+	public class Armor : UpgradableTrait<ArmorInfo>
+	{
+		public Armor(Actor self, ArmorInfo info)
+			: base(info) { }
+	}
 }