GitHub "mark" image is from: https://github.com/logos
Also changed default screen resolution to 1024x768 since it's more likely to be supported.
Signed-off-by: Jeffrey Han <itdelatrisu@gmail.com>
This mostly replaces the Slick2D Log class for error reporting. Most game errors will now trigger the error popup.
Signed-off-by: Jeffrey Han <itdelatrisu@gmail.com>
