MythTV v31 RPi4 install instructions

[jfabernathy]

I just updated my installation instruction for MythTV v31 on a Raspberry PI 4 4GB. Thanks to MikeB for his pi-utils that really make this simple.

This is primarily to keep me straight but others might find it useful.
https://mythtv-rp4.blogspot.com/2020/11 ... rpi-4.html

[gedakc]

Building upon the work of others, I have also documented and now share my steps to Build a PVR using Raspberry Pi 4, MythTV, & HDHomeRun.

[kzembower]

Man, I again want to thank you for these instructions. They saved me hours setting up MythTV on my RPi4. Thanks!

-Kevin