update<README>: update thanks; update style for Keep branch option

README.md

@@ -23,3 +23,4 @@
 ## Thanks
 
 * [PUMA](https://gitee.com/whgfu) 配置默认User
+* [Rwing](https://gitee.com/rwing) GitFlow: add an option to keep branch after finish

src/Views/Popups/GitFlowFinish.xaml

@@ -32,17 +32,10 @@
             Grid.Row="0" Grid.Column="2"
             Margin="4,0,0,0"
             x:Name="txtName"/>
-        <TextBlock
-            Grid.Row="1" Grid.Column="0"
-            Margin="0,0,8,0"
-            x:Name="txtKeep"
-            HorizontalAlignment="Right"
-            Text="{StaticResource Text.GitFlow.KeepBranchAfterFinish}"/>
         <CheckBox 
-            Grid.Row="1" Grid.Column="2"
-            Margin="0,4,0,0"
+            Grid.Row="1" Grid.Column="1" Grid.ColumnSpan="2"
             x:Name="chkKeep"
             IsChecked="False"
-           />
+            Content="{StaticResource Text.GitFlow.KeepBranchAfterFinish}"/>
     </Grid>
 </controls:PopupWidget>