Add Zoom to Window menu

src/atom-application.coffee

@@ -146,6 +146,7 @@ class AtomApplication
       label: 'Window'
       submenu: [
         { label: 'Minimize', accelerator: 'Command+M', selector: 'performMiniaturize:' }
+        { label: 'Zoom', accelerator: 'Alt+Command+MacCtrl+M', selector: 'zoom:' }
         { label: 'Close', accelerator: 'Command+W', selector: 'performClose:' }
         { type: 'separator' }
         { label: 'Bring All to Front', selector: 'arrangeInFront:' }