Beacon pickup / rotate code

using UnityEngine;
using System.Collections;
public class Pickup : MonoBehaviour {
 // Use this for initialization
 void Start () {

 }

 public float rotationSpeed = 100.0f;
 // Update is called once per frame
 void Update () {
 transform.Rotate(new Vector3 (0,rotationSpeed * Time.deltaTime, 0));
 }

 void OnTriggerEnter(Collider col){
 if(col.gameObject.tag == "Player"){
   col.gameObject.SendMessage("CellPickup");
   Destroy(gameObject);
  }
}
}