Merge pull request #441 from AhmedLSayed9/document_missing_readme_properties

Document missing properties in README

Author: AhmedLSayed9

README.md

@@ -79,6 +79,9 @@ customize to your needs.
 | [underline](https://pub.dev/documentation/dropdown_button2/latest/dropdown_button2/DropdownButton2/underline.html)                           | The widget to use for drawing the drop-down button's underline                           | Widget                     |    No    |
 | [isDense](https://pub.dev/documentation/dropdown_button2/latest/dropdown_button2/DropdownButton2/isDense.html)                               | Reduce the button's height                                                               | bool                       |    No    |
 | [isExpanded](https://pub.dev/documentation/dropdown_button2/latest/dropdown_button2/DropdownButton2/isExpanded.html)                         | Makes the button's inner contents expanded (set true to avoid long text overflowing)     | bool                       |    No    |
+| [focusNode](https://pub.dev/documentation/dropdown_button2/latest/dropdown_button2/DropdownButton2/focusNode.html)                           | An optional focus node to use as the focus node for the button                           | FocusNode                  |    No    |
+| [autofocus](https://pub.dev/documentation/dropdown_button2/latest/dropdown_button2/DropdownButton2/autofocus.html)                           | Whether the button should be focused when first built                                    | bool                       |    No    |
+| [enableFeedback](https://pub.dev/documentation/dropdown_button2/latest/dropdown_button2/DropdownButton2/enableFeedback.html)                 | Whether detected gestures should provide acoustic and/or haptic feedback                 | bool                       |    No    |
 | [mouseCursor](https://pub.dev/documentation/dropdown_button2/latest/dropdown_button2/DropdownButton2/mouseCursor.html)                       | The cursor for a mouse pointer when it enters or is hovering over the button             | MouseCursor                |    No    |
 | [alignment](https://pub.dev/documentation/dropdown_button2/latest/dropdown_button2/DropdownButton2/alignment.html)                           | Defines how the hint or the selected item is positioned within the button                | AlignmentGeometry          |    No    |
 | [buttonStyleData](https://pub.dev/documentation/dropdown_button2/latest/dropdown_button2/DropdownButton2/buttonStyleData.html)               | Used to configure the theme of the button                                                | ButtonStyleData            |    No    |
@@ -104,6 +107,7 @@ customize to your needs.
 | [width](https://pub.dev/documentation/dropdown_button2/latest/dropdown_button2/ButtonStyleData/width.html)               | The width of the button                                                 | double                      |    No    |
 | [padding](https://pub.dev/documentation/dropdown_button2/latest/dropdown_button2/ButtonStyleData/padding.html)           | The inner padding of the Button                                         | EdgeInsetsGeometry          |    No    |
 | [decoration](https://pub.dev/documentation/dropdown_button2/latest/dropdown_button2/ButtonStyleData/decoration.html)     | The decoration of the Button                                            | BoxDecoration               |    No    |
+| [foregroundDecoration](https://pub.dev/documentation/dropdown_button2/latest/dropdown_button2/ButtonStyleData/foregroundDecoration.html) | The decoration to paint in front of the Button                          | BoxDecoration               |    No    |
 | [elevation](https://pub.dev/documentation/dropdown_button2/latest/dropdown_button2/ButtonStyleData/elevation.html)       | The elevation of the Button                                             | int                         |    No    |
 | [overlayColor](https://pub.dev/documentation/dropdown_button2/latest/dropdown_button2/ButtonStyleData/overlayColor.html) | Defines the ink response focus, hover, and splash colors for the button | WidgetStateProperty<Color?> |    No    |