Added new version info to npc/merchants/refine.txt

git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@6073 54d463be-8e91-2dee-dedb-b68131a5f0ec

npc/merchants/refine.txt

@@ -35,6 +35,7 @@
 //= 1.8a - Fixed wrong indication thanks to NeoSaro [Lupus]
 //= 1.9 - Rewrote repairman, removed the Steel from repair cost [DracoRPG]
 //= 2.0 - Fixed missed equppment presence check. Thx2 Coltaro [Lupus]
+//= 2.0a - Added weight checks thanks to Neouni [Playtester]
 //============================================================