Adds javadoc commenting to Game.java.

Adds javadoc commenting to Game.java.
Adds the main method to Game.java.

Adds the main method to Game.java.
Also adds the javadoc commeting to it.
Corrected javadoc for Game.java.

Corrected javadoc for Game.java. A newline was missing.
Adds draw()-method.

The draw()-method draws the game mostly using
System.out.printf, so it looks a bit complicated.
Merge remote-tracking branch 'mikael/graphics_development' into devel