增加获取排行榜接口

script/module/billboard/BillboardLogic.lua

@@ -148,4 +148,10 @@ function isDot(human)
 		end
 	end
     return false
+end
+
+
+function GetRankList(boardType)
+	local board = BillboardDB.getBoard(boardType)
+	return board and board.rank2data
 end