Added TitleScreen.java
Added image directory
The TitleScreen class will allow players to choose from 4 options in the
final version of the game:
New - Starts a new game
Load - Loads an old game
Network - Starts a networked game
Options - Opens a menu to change game features

Additionally, there is a temporary debug mode added for your very own
devlopment pleasure. In this mode, the game starts immediately and each
player begins with 10,000 of each resource. The resources do not appear in
your hand, but don't panic. They are there.

Additionally additionally, Gavin has made some wonderful graphics for this
basic TitleScreen implementation.