Added ACP's compatible-with tag

diff --git a/WeightsWatcher.toc b/WeightsWatcher.toc
index f0fd629..9267c5c 100644
--- a/WeightsWatcher.toc
+++ b/WeightsWatcher.toc
@@ -7,6 +7,7 @@
 ## SavedVariables: ww_vars
 ## SavedVariablesPerCharacter: ww_charVars
 ## X-Category: Interface Enhancements
+## X-Compatible-With: 40000
 ## X-License: GPLv2

 Libs\AceLibrary\AceLibrary.lua