react-devtools: set icon on macos

Author: christian-schulze

packages/react-devtools/app.js

@@ -32,6 +32,11 @@ app.on('ready', function() {
     },
   });
 
+  // set dock icon for macos
+  if (process.platform === 'darwin') {
+    app.dock.setIcon(join(__dirname, 'icons/icon128.png'));
+  }
+
   // https://stackoverflow.com/questions/32402327/
   mainWindow.webContents.on('new-window', function(event, url) {
     event.preventDefault();