Added flicker tint

I just added something similar to powerUp colors index, except using a
transparent color. No need for spriteFlickerAnimation. The isHit color
index is part of the GameCharacter class and the Hero class references
it. We could change the timing of the flicker.
Merge pull request #25 from Daikatana/master

Added flicker tint
Fixed bullet deflection.
Merge pull request #26 from Daikatana/master

Fixed bullet deflection.
Merge pull request #27 from Lakon/development

Development
Changed a few lines in character blocking code.

I attempted several if-else-if conditions to make enemies who are pushed
back collide with impassable tiles or fall through passable ones. None
of the logic really worked, so I settled with original code with a
couple changes.
Merge pull request #7 from MikePaNtZ/development

Development
Added background music and laser sounds. Jump animation restored.

Tom and I worked on these fixes.
Merge pull request #28 from Daikatana/master

Added background sounds and laser sound. Jump animation restored
Purged all references to "Platformer"

Renamed solution and project. Deleted unused solutions and projects for
Xbox, Windows Phone, etc.
Merge pull request #17 from MikePaNtZ/development

Development