Nullkiller: allow buy army through pathfinder

AI/Nullkiller/Pathfinding/Actions/BuyArmyAction.cpp

@@ -0,0 +1,31 @@
+/*
+* BattleAction.cpp, part of VCMI engine
+*
+* Authors: listed in file AUTHORS in main folder
+*
+* License: GNU General Public License v2.0 or later
+* Full text of license available in license.txt file, in main folder
+*
+*/
+
+#include "StdInc.h"
+#include "BuyArmyAction.h"
+#include "../../VCAI.h"
+#include "../../Goals/CompleteQuest.h"
+#include "../../../../lib/mapping/CMap.h" //for victory conditions
+
+extern boost::thread_specific_ptr<CCallback> cb;
+extern boost::thread_specific_ptr<VCAI> ai;
+
+namespace AIPathfinding
+{
+	void BuyArmyAction::execute(const CGHeroInstance * hero) const
+	{
+		ai->recruitCreatures(hero->visitedTown, hero);
+	}
+
+	std::string BuyArmyAction::toString() const
+	{
+		return "Buy Army";
+	}
+}