Moving Rotating Cube(Unity)

moving.cs

using UnityEngine;
using System.Collections;

public class myscript : MonoBehaviour {

	// Use this for initialization
	void Start () {
	
	}
	
	// Update is called once per frame
	void Update () {
		this.transform.Rotate(0,1,0);
		Vector3 v = this.transform.position;
		if(Input.GetKey(KeyCode.A)){
			v.x -= 0.05f;
		}
		if(Input.GetKey(KeyCode.D)){
			v.x += 0.05f;
		}
		if(Input.GetKey(KeyCode.W)){
			v.z += 0.05f;
		}
		if(Input.GetKey(KeyCode.S)){
			v.z -= 0.05f;
		}
		this.transform.position = v;
	}
}