Free Rotating Object Script in C#

  using UnityEngine;
  using System.Collections;

  public class RotatingObject : MonoBehaviour {

  	public float myRotationSpeed = 100.0f;

  	public bool isRotateX = false;
  	public bool isRotateY = false;
  	public bool isRotateZ = false;

  	// CHANGE TO ROTATE IN OPPOSITE DIRECTION
  	private bool positiveRotation = false;
  	private int posOrNeg = 1;

  	// Use this for initialization
  	void Start (){
  		collider.isTrigger = true;
  		if(positiveRotation == false){
  			posOrNeg = -1;
  		}
  	}

  	// Update is called once per frame
  	void Update (){
  		//  Toggles X Rotation
  		if(isRotateX){
  			transform.Rotate(myRotationSpeed * Time.deltaTime * posOrNeg, 0, 0);//rotates coin on X axis
  		}
  		//  Toggles Y Rotation
  		if(isRotateY){
  			transform.Rotate(0, myRotationSpeed * Time.deltaTime * posOrNeg, 0);//rotates coin on Y axis
  		}
  		//  Toggles Z Rotation
  		if(isRotateZ){
  			transform.Rotate(0, 0, myRotationSpeed * Time.deltaTime * posOrNeg);//rotates coin on Z axis
  		}
  	}

  }

  }