Install scripts for Plex Media Server, SABnzbd and Transmission

[genxiam]

Hi,

recently I had to setup a new TrueNAS Core install from scratch. When trying to install my jails I noticed that most scripts that I've used before are out of date. I took a little bit of my time and updated them for my purposes. Maybe someone else finds them useful as well, so I pushed them to GitHub:

https://github.com/genxiam/truenas-core-scripts

Enjoy