New version!

In this new version there have been a few changes and additions.

==features==

Added new menu screen inbetween the main menu and game, with a reset player button.
Added HUD (just a simple HP bar that does nothing and a speed gauge)
Added enemy sphere that will jump at you once it sees you, and chase whatever location it last saw you in

==changes==
Updated character controller to use RigidBody.AddForce everywhere, for more predictable collision behaviour