Enable copy paste for mac?

main.js

@@ -3,6 +3,8 @@ var platform = require('os').platform()
 // Module to control application life.
 const app = electron.app
 const Tray = electron.Tray
+const Menu = electron.Menu
+
 // Module to create native browser window.
 const BrowserWindow = electron.BrowserWindow
 
@@ -19,9 +21,7 @@ function createWindow () {
   }else{
     mainWindow = new BrowserWindow({width: 1280, height: 800, icon: __dirname + '/src/img/icon.ico'})
   }
-    
-  //appIcon = new Tray(trayIcon)
-  // and load the index.html of the app.
+
   mainWindow.loadURL(`file://${__dirname}/index.html`)
 
   // Open the DevTools.
@@ -34,12 +34,38 @@ function createWindow () {
     // when you should delete the corresponding element.
     mainWindow = null
   })
+
+  var template = [{
+      label: "Application",
+      submenu: [
+          { label: "Quit", accelerator: "Command+Q", click: function() { app.quit(); }}
+      ]}, {
+      label: "Edit",
+      submenu: [
+          { label: "Undo", accelerator: "CmdOrCtrl+Z", selector: "undo:" },
+          { label: "Redo", accelerator: "Shift+CmdOrCtrl+Z", selector: "redo:" },
+          { type: "separator" },
+          { label: "Cut", accelerator: "CmdOrCtrl+X", selector: "cut:" },
+          { label: "Copy", accelerator: "CmdOrCtrl+C", selector: "copy:" },
+          { label: "Paste", accelerator: "CmdOrCtrl+V", selector: "paste:" },
+          { label: "Select All", accelerator: "CmdOrCtrl+A", selector: "selectAll:" },
+          { label: "Reload", accelerator: 'CmdOrCtrl+R', click (item, focusedWindow){
+            if (focusedWindow) focusedWindow.reload()
+          }}
+      ]}
+  ];
+
+  Menu.setApplicationMenu(Menu.buildFromTemplate(template));
+  mainWindow.setMenuBarVisibility(false)
 }
 
 // This method will be called when Electron has finished
 // initialization and is ready to create browser windows.
 // Some APIs can only be used after this event occurs.
-app.on('ready', createWindow)
+app.on('ready', function(){
+  createWindow()
+  mainWindow.maximize()
+})
 
 // Quit when all windows are closed.
 app.on('window-all-closed', function () {