Updated GetAITarget documentation with target types

CreatureMethods.h

@@ -634,6 +634,17 @@ namespace LuaCreature
      * Returns a target from the [Creature]'s threat list based on the
      *   supplied arguments.
      *
+     * <pre>
+     * enum SelectAggroTarget
+     * {
+     *     SELECT_TARGET_RANDOM = 0, //Just selects a random target
+     *     SELECT_TARGET_TOPAGGRO, //Selects targes from top aggro to bottom
+     *     SELECT_TARGET_BOTTOMAGGRO, //Selects targets from bottom aggro to top
+     *     SELECT_TARGET_NEAREST,
+     *     SELECT_TARGET_FARTHEST
+     * };
+     * </pre>
+     *
      * For example, if you wanted to select the third-farthest [Player]
      *   within 50 yards that has the [Aura] "Corrupted Blood" (ID 24328),
      *   you could use this function like so: