Plugin Development Documentation
I don't know if it is from my end but I'm totally unable to access the plex plugin development documentation since the hack of the forums.
Looks like the request to that documentation is redirected to a secure https connection and not only there is not a valid certification on the subdomain dev.plex.tv but even allowing the certification temporary I reach a 404 not found page.
The plex plugin development documentation used to be at:
And though it was a little outdated it was the only one -with enough info- available.