Rotate the object using device acceleration

Im just trying to rotate the object using device acceleration but I couldn't solve this problem

Here is my script :

// Move object using accelerometer var speed = 10.0;

     function Update () {
         var dir : Vector3 = Vector3.zero;
 
         // we assume that device is held parallel to the ground
         // and Home button is in the right hand
         
         // remap device acceleration axis to game coordinates:
         //  1) XY plane of the device is mapped onto XZ plane
         //  2) rotated 90 degrees around Y axis
         dir.x = -Input.acceleration.y;

         
         // clamp acceleration vector to unit sphere
         if (dir.sqrMagnitude > 1)
             dir.Normalize();
         
         // Make it move 10 meters per second instead of 10 meters per frame...
         dir *= Time.deltaTime;
             
         // Move object
         transform.Translate (dir * speed);
     }

This Script moves my Object to right or left while I want to rotate the object to right or left