adding in some needed packages

Assets/DamageNumbersPro/Demo/Scripts/DNP_CubeSpawner.cs

@@ -0,0 +1,25 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace DamageNumbersPro.Demo
+{
+    public class DNP_CubeSpawner : MonoBehaviour
+    {
+        public float delay = 0.2f;
+        public GameObject cube;
+
+        void Start()
+        {
+            InvokeRepeating("SpawnCube", 0, delay);
+        }
+
+        void SpawnCube()
+        {
+            GameObject newCube = Instantiate<GameObject>(cube);
+            newCube.SetActive(true);
+            newCube.transform.SetParent(transform, true);
+            newCube.transform.localScale = Vector3.one;
+        }
+    }
+}