There had already talked about yesterday, and after an initial rollout that involved only a few fortuntati now WhatsApp Web is now available for all iOS users .
The browser version of WhatsApp is available for some time for other operating systems, like Android, but now is also available for iOS users. The update is remote , so no download required using the feedback section of the App store.
WhatsApp enable Web is very simple. Toss WhatsApp on your iOS device and go to Settings. Here you will find the voice WhatsApp Web, which will allow you to scan the QR code that you find on the web page of the service. The reading of the code will be immediate, and you can immediately use the famous application for instant messaging even from your PC / Mac.