Updated README
Committing assorted changes.
Removed some unnecessary code.
Replaced permalinks to source comment with link to author page to save comment space. Increased min_links and min_comments threshholds.
Enforced no 'None' video titles (bug fix). Changed min_num_links check from > to >=
Removed message reporting running # scraped in scrape()
Memoizing video titles so we don't have to re-retrieve them each time the bot updates a comment.
Fixed bug introduced with last commit.
Related bug from same commit.