Help! Kali Linux 2.0 Wifi Option Missing!

Hey everyone, I'm a total beginner at penetraitontesting in Kali Linux.

I heard about penetrationtesting about 2 weeks ago and i installed kali linux 3 days ago. (I'm running Kali Linux 2.0 in virtualbox on a macbook pro.)

So my problem is that i watched a video tutorial on youtube, about cracking wpa/wpa2 wifi passwords. So i wanted to try it out but when i tried, i saw that i was not connected to wifi. It says that i am connected to a wired connection, even though i don't have any internet cable plugged to my macbook. I don't even have the option to connect to a wifi and i don't know what is wrong. I really hope that you guys can help me out, and i would really appreciate your help!

Thanks!