//When the enemies health reaches 0
    //Drop coins, and destroy the object
    public void Die()
    {
        //Randomly reward the player a number of coins from the
        //Min and Max ints
        int reward = Random.Range(minCoins, maxCoins);

        for (int i = 0; i < reward; i++)
        {
            //Make them coins
            Instantiate(coin, transform.position, transform.rotation);
        }

        List <GameObject> t = waveSpawnerRef.GetEnemies();

        for (int i = 0; i < t.Count; i++)
        {
            if (gameObject.tag == "Enemy")
            {
                t.RemoveAt(i);
                break;
            }
        }
        //Destroy that baddie
        Destroy(gameObject);
    }