Now you're able to switch states of the game like credits, help, etc.
Working on button logic
 User is able to navegate through through states using the menu buttons.
Back button image is needed.
I got rid of warnings when loading images and added names to the credit
section.
I was able to integrate the game with the main. To run game, run
Main.java in folder menu.
I fixed a bug in the player. The bullets don't have a delay to change
direction now.
I added three buttons for level sections.
I added text to the help section.
Merge branch 'issue18' into develop

Conflicts:
	CS 447 Project 2/src/edu/wsu/vancouver/ssdd/levelOne.java