void OnTriggerExit(Collider collider)
{
GameObject thingLeft = collider.gameObject;
if (thingLeft.tag == "Pin") {
// print ("Pin Destroy");
Destroy (thingLeft.transform.parent.gameObject);
}
// if (thingLeft.GetComponent<Pin> ()) {
// print ("Pin Destroy");
// Destroy (thingLeft);
// }
}