Feature request: add clarification in docs about installation

[mtdmali]

Feature description

I think it would be very helpful for users to explain that these Python scripts don't have to be run on the machine that hosts your Plex Media Server.

Use case

I had become frustrated in figuring out how to install this on the Synology NAS that hosts my Plex Media Server. I don't know how to access it via SSH or manage Docker containers.

It wasn't until I realized that I can simply run the Python scripts from my Macbook that I realized how easy this would be to sync my Plex history with Trakt.

Plan to implement

I can make a PR to update the docs if need be.

[glensc]

Contributions are welcome:

• https://github.com/Taxel/PlexTraktSync#contribute