Unity 3D Billboard scripts

CameraFacingBillboard.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;


//[ExecuteInEditMode]
public class CameraFacingBillboard : MonoBehaviour {

    [SerializeField]
    private Camera referenceCamera;

    // Use this for initialization
    void Start () {
        if (!referenceCamera) {
            referenceCamera = Camera.main;
        }
    }
	
	// Update is called once per frame
	void Update () {
		
	}

    //Orient the camera after all movement is completed this frame to avoid jittering
    void LateUpdate()
    {
        transform.LookAt(transform.position + referenceCamera.transform.rotation * Vector3.forward, referenceCamera.transform.rotation * Vector3.up);
    }

}