Terrible test levels
GunScript refactor, grenades, animations on player

GunScript had player-specific stuff moved to different script so enemies
can use same gunscript (enemy use still untested though). secondary fire
throws a grenade that bounces and explodes after a few seconds.
Animations applied to PC and transition depending upon player speed.
player looks at mouse so can shoot ahead and run backwards.
pick up grenades
Initial jump force larger
Cleanup scenes
Merge remote-tracking branch 'origin/Player-test'

Conflicts:
	Assets/PlayerTestScene.unity
Working build with work done so far