Smooth motion for gesture based character controller

Hi there,

I´ve been trying to create a gesture based CharacterController using Omek MotionToolKit. Now that I´ve managed to get things up and running I´m starting to sand out the ruff edges on my scripts. My problem is that I need to get character move smoothly when triggered to move and I´ve tried bunch of things but due to my newbie coding skills I haven´t been able to figure it out and my character shifts from place to place instantly. Here´s my code:

 using UnityEngine;
 using System.Collections;
 using OmekFramework.Beckon;
 using OmekFramework.Beckon.Main;
 using OmekFramework.Common.BasicTypes;
 using OmekFramework.Beckon.Data;
 using OmekFramework.Common.GeneralUtils;
 using System.Collections.Generic;
 using System.Runtime.InteropServices;
 
 public class liike : MonoBehaviour {
     public float speed = 5.0F;
     public float gravity = 20.0F;
     
      
    
     public Vector3 moveDirection = Vector3.zero;
     
     // Use this for initialization
     void Start () {
     
     }
     
     // Update is called once per frame
     void Update () {
         
         CharacterController controller = GetComponent<CharacterController>();
          if (controller.isGrounded) {
              
             moveDirection = transform.TransformDirection(Vector3.forward)*speed;
            
         
         }
         
         if (BeckonManager.BeckonInstance.Gestures.IsGestureActive("askelkavelyoik",0))
         {
             
             
             moveDirection.y -= gravity * Time.deltaTime;
             controller.Move(moveDirection*Time.fixedDeltaTime);
 
 
     }
 }
 }

So what approach would be best to get my CC moving smoothly in this case?