Hot on the heels of the release of iPhone 5 and iOS 6, Apple have also released a software update for Mountain Lion(the latest version of the operating system on the mac). Dubbed OSX Version 10.8.2, the update adds the promised facebook integration feature amongst a whole slew of other features. To download this update right now, go to the Apple logo, click “software update” and you will be able to download the update from the App store. Alternatively, grab the manual installer from the link below.
On a side note, you should back up using Time Machine(or other backup solutions) before doing the update. After which you will need to restart your computer.