No output folder configured even when folder is passed

[SathyaBhat]

Describe the bug
Exception: No output folder configured even when folder is passed:

Traceback (most recent call last):
  File "F:\python38\Scripts\spotify_dl-script.py", line 11, in <module>
    load_entry_point('spotify-dl', 'console_scripts', 'spotify_dl')()
  File "c:\users\sathy\onedrive\documents\code\spotify-dl\spotify_dl\spotify_dl.py", line 64, in spotify_dl
    raise(Exception("No output folder configured"))
Exception: No output folder configured

To Reproduce
Please copy paste the entire command, running it in verbose more by passing the -V flag.
example: spotify_dl -V .....

spotify_dl -l "https://open.spotify.com/playlist/3OPNr0gieErXlFDqZnRLu3?si=1c49e658bd434ccf" -o .

Expected behavior
Spotify-dl should not crash when folder is provided. regression from #233