KALI special security testing tool for Information Security Specialists.
Kali contain a lot of special security tool.  It is so usefull for wireless security test.
With Airmon-ng you change change your wireless to monitor mode.
you can use this commang.
airmon-ng start wlan0
After this command we will use this command for dump ivs airdump-ng wlan0mon 
After get enough IVS or handshake you can use aircrack-ng –a2   /root/Desktop/*.cap and you will see wireless password.