Fix issue where requests to get a book from ISBNdb always failed due to improper use of ratpack.http.client.HttpClient#get
Test using a book that isn't the fallback used when requests to ISBNdb fail
Always use latest version on this branch
Merge branch 'fix-get-book-request' of https://github.com/mhurne/example-books into latest

Conflicts:
	src/main/groovy/ratpack/example/books/IsbnDbCommands.groovy