add example lists of books

[travischambers]

add example lists that allows people to use it without a goodreads account to simply find books that are available at their libraries. if someone doesn't have a well-populated to-read shelf, this would still be useful.

• top 100 classics
• nyt bestellers of the last 10 years
• perhaps some lists curated from this - https://www.goodreads.com/list/popular_lists