GridLockedObject

using UnityEngine;
using System.Collections;

[ExecuteInEditMode]
public class GridLockedObject : MonoBehaviour {
    void Update() {
    Vector3 position = transform.position;
    position.x = Mathf.Round(position.x);
    position.y = Mathf.Round(position.y);
    position.z = Mathf.Round(position.z);
    transform.position = position;
    }
}