My book_packer solution.

I used Nokogiri to parse the HTML pages and extracted the information with a combination of xpath and css-selectors. I used Bundler to manage the required gems.

 To run the scraper:

 1. run 'bundle install' to install the required gems.
 2. run the bookpacker script with 'ruby bookpacker.rb'

Thanks for this challenge! I really enjoyed working on this, and I'd love to hear what you think.