code:

	void Update ()
	{
		//Ignore input in ignore button is down
		if( Input.GetButton( "IgnoreControl" ) )
		{
			return;
		}
		// Read the mouse input axis
		Vector3 rotationDelta = new Vector3();
		Vector3 scaledSensitivity = rotationSensitivity * Time.deltaTime * 10.0f;
		rotationDelta.x += Input.GetAxis("Mouse X") * scaledSensitivity.x;
		rotationDelta.y += Input.GetAxis("Mouse Y") * scaledSensitivity.y;
		rotationDelta.z -= Input.GetAxis("Roll") * scaledSensitivity.z;
		
		//Create quaternions around x,y,z respectively
		Quaternion xQuaternion = Quaternion.AngleAxis (rotationDelta.x, Vector3.up);
		Quaternion yQuaternion = Quaternion.AngleAxis (rotationDelta.y, Vector3.left);
		Quaternion zQuaternion = Quaternion.AngleAxis (rotationDelta.z, Vector3.forward);
		
		//Rotate the localRotation by these new quaternions
		transform.localRotation = transform.localRotation * xQuaternion * yQuaternion * zQuaternion;
	}