Merge pull request #22 from Lakon/development

Development
Merge pull request #23 from Lakon/development

Moved Hud to its own class
Added HeroGun Subclasses

HeroGun Subclasses added to change each hero's bullet image. Health bar
now red too.
Merge pull request #24 from Daikatana/master

Added HeroGun Subclasses
Merge pull request #16 from MikePaNtZ/development

Development merge