small edit to genobj javadoc

src/main/java/GeneralObject.java

@@ -22,6 +22,9 @@ import java.awt.*;
 /**
  * ABSTRACT PARENT TO ALL GAME BOARD OBJECTS
  *
+ * This class is the essential interface that all GameObjects inherit, in order to generate the game board
+ * as well as interactions between different objects easily.
+ *
  * @author Christiaan
  */
 public interface GeneralObject {