Progress on map editor
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General Changes
-added missing @Override annotations
-added new ui icons exit.png, spawn.png, spike.png

Map Editor
-added com.bbr.mapeditor package containing MapEditor.java and Toolbar.java
-added com.bbr.mapeditor.gui package containing SwingButton.java and SwingMenu.java

MapEditor.java
-added code to setup and display a JFrame with two components, MapEditor and Toolbar
-tracks mouse movements and displays mouse coordinates

Toolbar.java
-displays a toolbar of what can be added to the map (current missing enemies)

SwingButton.java
-simple button that draws using Swing graphics
-incompatible with Slick2D

SwingMenu.java
-provides formatting and automation for groups of buttons
-incompatible with slick2D