added sources for Slick

Former-commit-id: 1647fa32ef6894bd7db44f741f07c2f4dcdf9054
Former-commit-id: 0e5810dcfbe1fd59b13e7cabe9f1e93c5542da2d

lib/slick-source/org/newdawn/slick/command/ControllerButtonControl.java

@@ -0,0 +1,20 @@
+package org.newdawn.slick.command;
+
+/**
+ * A control indicating that a gamepad/joystick button must be pressed
+ * or released to invoke an command.
+ *
+ * @author kevin
+ */
+public class ControllerButtonControl extends ControllerControl {
+
+	/**
+	 * Create a new control based on a controller input
+	 * 
+	 * @param controllerIndex The index of the controller to listen to
+	 * @param button The index of the button that causes the command
+	 */
+	public ControllerButtonControl(int controllerIndex, int button) {
+		super(controllerIndex, BUTTON_EVENT, button);
+	}
+}