Installing PowerShell on Kali Linux

UPDATE NOV 2019 This post is out of date as of 2019 as powershell has been added to the primary repos. Just do a:
apt update && apt -y install powershell And you will have powershell on your system.
Old Post You may already be aware that you can safely add external repositories to your Kali Linux installation but you may not be aware that one of the many repositories available online includes one from Microsoft that includes PowerShell.