Added Javadoc comments

src/WarehouseGUI.java

@@ -10,7 +10,10 @@ import javafx.scene.text.Text;
 import javafx.stage.Stage;
 
 /**
- * A class that makes the GUI for the Warehouse class.
+* 2019-03-10
+* Authors: Harkamal, Vikram, Haris, Siddhant, Nathan
+* WarehouseGUI class, Initializes and displays the graphical interface for the warehouse in Taipan
+*
 */
 public class WarehouseGUI {