Simple Image Crawling Example
Install PhantomJS, CasperJS
sudo casperjs crawl_contents.js --dst=name_to_create --id=target_toon_id --no=first_to_no
dst option : In general, numerous images are gathered after the crawling process. so you should fill the name of folder which to create.
id option : To find the target Webtoon, Enter the toon page and get the toon ID from the URL.
no option : This code get the images from first chapter of the toon to specified chapter No.