node scraper.js <tag1> [<tag2>]
eg: node scraper.js tab_head furry
This will fetch all images that turn up under tag1 and optional tag2 with original quality, and dump them into ./output
donmai.us exposes an API; that should be used instead of plain scraping. This script simply automates requests and parses the html to grab CDN URLs. Expect it to break.