added credit for javafx

Author: huixianc

src/main/java/DialogBox.java

@@ -17,6 +17,9 @@
 import javafx.scene.layout.HBox;
 import javafx.scene.paint.Color;
 
+//@@author huixianc-reused
+// reused from https://github.com/huixianc/duke/blob/master/tutorials/ JavaFX tutorials
+
 /**
  * An example of a custom control using FXML.
  * This control represents a dialog box consisting of an ImageView to represent the speaker's face and a label
@@ -67,4 +70,6 @@ public static DialogBox getDukeDialog(String text, Image img) {
         db.flip();
         return db;
     }
-}
+}
+
+//@@author

src/main/java/Launcher.java

@@ -1,10 +1,15 @@
 import javafx.application.Application;
 
+//@@author huixianc-reused
+// reused from https://github.com/huixianc/duke/blob/master/tutorials/ JavaFX tutorials
+
 /**
  * A launcher class to workaround classpath issues.
  */
 public class Launcher {
     public static void main(String[] args) {
         Application.launch(Main.class, args);
     }
-}
+}
+
+//@@author

src/main/java/Main.java

@@ -8,6 +8,9 @@
 import javafx.scene.layout.AnchorPane;
 import javafx.stage.Stage;
 
+//@@author huixianc-reused
+// reused from https://github.com/huixianc/duke/blob/master/tutorials/ JavaFX tutorials
+
 /**
  * A GUI for Duke using FXML.
  */
@@ -34,4 +37,6 @@ public void start(Stage stage) {
             e.printStackTrace();
         }
     }
-}
+}
+
+//@@author

src/main/java/MainWindow.java

@@ -7,6 +7,9 @@
 import javafx.scene.layout.AnchorPane;
 import javafx.scene.layout.VBox;
 
+//@@author huixianc-reused
+// reused from https://github.com/huixianc/duke/blob/master/tutorials/ JavaFX tutorials
+
 /**
  * Controller for MainWindow. Provides the layout for the other controls.
  */
@@ -64,4 +67,6 @@ private void handleUserInput() {
         }
 
     }
-}
+}
+
+//@@author