Adding books schema to commercial books components

This adds the book schema (http://schema.org/Book) to the commercial books components.

No visual change to the page but code has been checked via http://www.google.com/webmasters/tools/richsnippets

Example of check for high relevance component;

![screen shot 2014-06-23 at 14 48 04](https://cloud.githubusercontent.com/assets/1303616/3358330/107b91de-fadd-11e3-9796-54eed618beed.png)