Merge branch 'master' of https://github.com/duckduckgo/zeroclickinfo-spice
Merge branch 'master' of https://github.com/duckduckgo/zeroclickinfo-spice
Merge branch 'master' of https://github.com/duckduckgo/zeroclickinfo-spice
BOOK spice returning 10 maximum books in the api and selecting one based on presence of reviews
Merge branch 'master' of https://github.com/tihom/zeroclickinfo-spice into jag/books-improvement
Book: Add isRelevant to book.js
Books: Added the authors and subtitles in the relevancy.

Queries such as "the shining by stephen king" or "Still Writing: The Pleasures and Perils of a Creative Life" should work.
Merge branch 'jag/books-improvement'
Books: Remove the year from the header.