Made spiderbots buildable, animated spiderbot sprites.

code/game/objects/items/robot/robot_parts.dm

@@ -270,5 +270,12 @@
 			W.loc = src
 			src.flash1 = W
 			user << "\blue You insert the flash into the eye socket!"
+	else if(istype(W, /obj/item/weapon/stock_parts/manipulator))
+		user << "\blue You install some manipulators and modify the head, creating a functional spider-bot!"
+		new /mob/living/simple_animal/spiderbot(get_turf(loc))
+		user.drop_item()
+		del(W)
+		del(src)
+		return
 	return