/// <summary>
/// Grab the locations for spawn, exit, and cashier
/// </summary>
private void Start()
{
//Gather all the vector3 pos's we need for intelligent spawning and movement.
GameObject entrance = GameObject.FindGameObjectWithTag(GameTags.ENTRANCE_TAG);
mCustomerSpawnLocation = GameObjectExtensions.FindComponentInChildWithTag <Transform>(entrance, GameTags.SPAWN_TAG).position;
CustomerExitLocation = GameObjectExtensions.FindComponentInChildWithTag <Transform>(entrance, GameTags.NAV_LOC_TAG).position;
CashierLocation = GameObject.FindGameObjectWithTag(GameTags.CASHIER_TAG).FindComponentInChildWithTag <Transform>(GameTags.NAV_LOC_TAG).position;
mShelves = GameObject.FindGameObjectsWithTag(GameTags.SHELF_TAG);
}