Download of url.lower() causes the download to fail on imgur

[baudren]

Hi,

just to let you know, I'm not sure why you try to download the lowercase url, but at least on imgur hosted links, this makes the download return an "image not found". By simply removing the lower() call, it's working on my side better.

https://github.com/ClarityCoders/RedditImageScraper/blob/5782976076d6413f360c0e6341c4b1354a7ad6cd/SubDownload.py#L54

Thanks for the work, I found the piece of code comparing the images nicely done!