@AbedKhooli I'm letting the cat out of the bag a little early here, but firmware version 2.2.0 officially has this feature in it, and I'm excited so I wanted to let you know.
If you want to try it ahead of it being pushed over the air (which is still TBD but probably withing the next two weeks), I put an Arduino Boards Manager package up using http://update.wickeddevice.com/package_airqualityegg-2.2.0_index.json if you are itching to try it, I recommend loading it using Arduino 1.6.9 (available from here) following these instructions. I haven't tried with the newest versions of Arduino,
Otherwise you can just wait for the update to go out to everyone and you should get it automatically by restarting your Egg(s), while connected to the internet of course.