smashwords.com forbids this; readme should tell people to get permission first

[gthb]

The code in this repo violates both the robots.txt of smashwords.com:

$ curl -s https://www.smashwords.com/robots.txt | tail -4
User-agent: *
Disallow: /books/search?
Disallow: /books/download/
Crawl-delay: 4

and their terms of service, as far as I can see: “Third parties are not authorized to download, host and otherwise redistribute Smashwords books without prior written agreement from Smashwords” (you could imagine that this only prohibits downloading for subsequent hosting or redistribution, but I think that would be an opportunistic interpretation :) ).

The readme should tell people very clearly that they must get permission from smashwords.com before running this stuff against their site.

[soskek]

Thanks! Anyway, I've added some sentences in README.