Add event

src/main/java/net/citizensnpcs/api/event/NPCLinkToPlayerEvent.java

@@ -0,0 +1,30 @@
+package net.citizensnpcs.api.event;
+
+import org.bukkit.entity.Player;
+import org.bukkit.event.HandlerList;
+
+import net.citizensnpcs.api.npc.NPC;
+
+public class NPCLinkToPlayerEvent extends NPCEvent {
+    private final Player player;
+
+    public NPCLinkToPlayerEvent(NPC npc, Player player) {
+        super(npc);
+        this.player = player;
+    }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public Player getPlayer() {
+        return player;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+
+    private static final HandlerList handlers = new HandlerList();
+}