Divided scrape-eps.py into functions; we don't really need this file anymore but I'll leave it for now.
bb_imdb.py now has all of the functions from scrape-eps.py. The filename is hard coded instead of passed in by an argument to make testing easier. the parse_args function still exists, just is not included in main(). get_all_episodes now returns a list of episode objects with timing data up to season 5 episode 4.