Downloads zip files from a given URL. Zip files must be linked in anchor tags in the html returned by the URL. Files are then unzipped, and child files are read and loaded idempotently into a NEWS_XML list in redis.
##Usage: news-downloader [baseUrl] [tempDir] [redisHostNameAndPort] where [baseUrl] is the URL of the index page which indexes the zips [tempDir] is a local directory, writeable to the current process, where files will be stored temporarily [redisHostNameAndPort] is hostname:port to access redis, such as localhost:6379