You can download it from here: https://github.com/v1s1t0r1sh3r3/airgeddon
Follow the instructions to download and install it. They are on wiki at Installation & Usage section: https://github.com/v1s1t0r1sh3r3/air...on%20&%20Usage
At the bottom, there are a special metion for Kali Linux users because there is a very easy to install .deb package. You will see the last version now is 7.02.
Regards.
