add desktop support

Author: ditclear

README.md

@@ -22,6 +22,7 @@ Use Flutter💪  to implement the UI challenge of Google Maps on [uplabs](https:
 | ------------------------------------------------------------ | ------------------------------------------------------------ |
 | [master](<https://github.com/flutter-ui-challenges/flutter_challenge_googlemaps>) | use `setState` to notify UI update                           |
 | [provide](https://github.com/flutter-ui-challenges/flutter_challenge_googlemaps/tree/provide) | use  [flutter-provide](https://github.com/google/flutter-provide) to notify UI update |
+| [desktop](https://github.com/flutter-ui-challenges/flutter_challenge_googlemaps/tree/desktop) | use [go-flutter](https://github.com/go-flutter-desktop/go-flutter) to implement UI on Desktop |
 
 ### Challenge 
 
@@ -39,9 +40,7 @@ Use Flutter💪  to implement the UI challenge of Google Maps on [uplabs](https:
 
 #### 不用客气，buy Me a Lunch ~
 
-|                            Alipay                            |                          WeChatPay                           |
-| :----------------------------------------------------------: | :----------------------------------------------------------: |
-| ![](https://camo.githubusercontent.com/fbaa3ecc28af039c8e6011ddf473e51d2a08c8d2/68747470733a2f2f75706c6f61642d696d616765732e6a69616e7368752e696f2f75706c6f61645f696d616765732f333732323639352d666664653137306665633933316561652e706e673f696d6167654d6f6772322f6175746f2d6f7269656e742f7374726970253743696d61676556696577322f322f772f333430) | ![](https://camo.githubusercontent.com/ade43488617a69c72d5be1841fd4d0934689a3b0/68747470733a2f2f75706c6f61642d696d616765732e6a69616e7368752e696f2f75706c6f61645f696d616765732f333732323639352d316238323761353465633237346535392e706e673f696d6167654d6f6772322f6175746f2d6f7269656e742f7374726970253743696d61676556696577322f322f772f333430) |
+[sponsor](https://github.com/flutter-ui-challenges/JoinUs/blob/master/sponsor.md)
 
 ### License
 

README_CN.md

@@ -16,10 +16,11 @@
 
 #### 项目介绍 
 
-| 分支                                                         | 描述                               |
-| ------------------------------------------------------------ | ---------------------------------- |
-| [master](<https://github.com/flutter-ui-challenges/flutter_challenge_googlemaps>) | 使用 `setState` 来通知UI更新       |
-| [provide](https://github.com/flutter-ui-challenges/flutter_challenge_googlemaps/tree/provide) | 使用  [flutter-provide来通知UI更新 |
+| 分支                                                         | 描述                                                         |
+| ------------------------------------------------------------ | ------------------------------------------------------------ |
+| [master](<https://github.com/flutter-ui-challenges/flutter_challenge_googlemaps>) | 使用 `setState` 来通知UI更新                                 |
+| [provide](https://github.com/flutter-ui-challenges/flutter_challenge_googlemaps/tree/provide) | 使用  [flutter-provide来通知UI更新                           |
+| [desktop](https://github.com/flutter-ui-challenges/flutter_challenge_googlemaps/tree/desktop) | 使用 [go-flutter](https://github.com/go-flutter-desktop/go-flutter) 来实现桌面端 |
 
 ### 效果图
 
@@ -37,9 +38,7 @@
 
 #### 不用客气，buy Me a Lunch ~
 
-|                            Alipay                            |                          WeChatPay                           |
-| :----------------------------------------------------------: | :----------------------------------------------------------: |
-| ![](https://camo.githubusercontent.com/fbaa3ecc28af039c8e6011ddf473e51d2a08c8d2/68747470733a2f2f75706c6f61642d696d616765732e6a69616e7368752e696f2f75706c6f61645f696d616765732f333732323639352d666664653137306665633933316561652e706e673f696d6167654d6f6772322f6175746f2d6f7269656e742f7374726970253743696d61676556696577322f322f772f333430) | ![](https://camo.githubusercontent.com/ade43488617a69c72d5be1841fd4d0934689a3b0/68747470733a2f2f75706c6f61642d696d616765732e6a69616e7368752e696f2f75706c6f61645f696d616765732f333732323639352d316238323761353465633237346535392e706e673f696d6167654d6f6772322f6175746f2d6f7269656e742f7374726970253743696d61676556696577322f322f772f333430) |
+[赞助开发者](https://github.com/flutter-ui-challenges/JoinUs/blob/master/sponsor.md)
 
 ### License