Update to how Plex token is grabbed and libraries are updated...

[skingry]

The code that was in place didn't work (token isn't parsed out properly if you're using auth and the libraries aren't updated even if you aren't using a token)... don't know why, but I do know the code to update Plex libraries from another popular python program works... so that's what's here now.

Also added a line to the .gitignore to ignore pid files put in the application dir if you're using the included init scripts.