Moving object to another object

So, I have two prefabs which I have made to a gameobject. Now I want the gameobject to move towards the other gameobject. I don't know what to do next maybe you guys could help me out, I'd really appreciate it!

using UnityEngine; using System.Collections;

public class EnemyBehaviour : MonoBehaviour {

 GameObject player = Instantiate(Resources.Load("Player")) as GameObject; 
 GameObject enemy = Instantiate(Resources.Load("BasicEnemy")) as GameObject; 
 public Transform target = player;
 public float speed;
 void Update() {
     float step = speed * Time.deltaTime;
     transform.position = Vector3.MoveTowards(transform.position, target.position, step);
 }

}