Issue when youtube title has a vertical bar "I" in the title

[iCanuck]

Had an issue when youtube title has a vertical bar "I" in the title.

I'm not setup to send a PR but I did a small correction in YoutubeDownloader.py

replace:
yt.title

with:
yt.title.replace("|", "-")

[Anil-matcha]

Please create a PR, will merge it