Issue 625: PlayerSpawner

Repository: miragenet/mirage

Issue body:
**Please explain the suggested feature in detail.**
A way to disable auto spawning
**How exactly does this keep you from releasing your game right now?**
player spawner is in packages, therefore i cannot edit it myself.
**Can you suggest a possible solution?**
a bool to disable auto spawn
**Additional context**
Add any other context or screenshots about the feature request here.
and a simple way to spawn it would be nice too
