Merge pull request #23 from jjw24/add_save_settingsmenue_close

Save all plugins' settings on closing Settings menu

Wox/SettingWindow.xaml.cs

@@ -318,6 +318,7 @@ namespace Wox
         private void OnClosed(object sender, EventArgs e)
         {
             _viewModel.Save();
+            PluginManager.Save();
         }
 
         private void OnCloseExecuted(object sender, ExecutedRoutedEventArgs e)