Update to Mister Boppo! - v0.5.1

In this Update:

1. Added a Start Menu
2. Escape key now Quits to Start Menu
3. Play as Alien
4. Point system is open. Player seeks personal high score in this build.
5. One Level
4. New ring texture

Next update will add a scoring/upgrade system to access to the Kitten and Censored Player Characters for points, plus another level or two. That will probably be it for this project.