Updated credits with font credit

"Does that come in a Michigan?" -Demetri Martin
Merge pull request #6 from codeNinja77/Enemies

Added enemy image.
Merge pull request #7 from codeNinja77/Enemies

Enemies
Merge pull request #8 from codeNinja77/Enemies

First step towards AI.
Merge pull request #9 from codeNinja77/Enemies

Enemy shoots at player.
Hitbox progress
Added hitboxes
Added a timer delay for enemy.
Added Shielded Ship image to project, imagepaths

Commit Size: Miniscule - Graphical
Some shooting improvements.

Also updated AI
Loading improvement
Balance.
Improving logic progress.
Refactored image changing.

Yay Enums!
Added a couple more images.
Added correct javadoc to classes.
Fixed major slow-down bug.
Update Version
Fixed THE bug.

Yeah I fixed it, now give me my shield sprite.
Fixed an ArrayList.outOfBounds exception.