docs(README): add reference to the book

README.md

@@ -8,7 +8,11 @@
 
 The idea is to **demonstrate how to write a typical, non-trivial CRUD application using AngularJS**. To showcase AngularJS in its most advantageous environment we've set out to write a simplified project management tool supporting teams using the SCRUM methodology. The sample application tries to show best practices when it comes to: folders structure, using modules, testing, communicating with a REST back-end, organizing navigation, addressing security concerns (authentication / authorization).
 
-We've learned a lot while using and supporting AngularJS on the [mailing list](https://groups.google.com/group/angular) and would like to share our experience.
+This sample application is featured in our [book](http://goo.gl/gKEsIo) where you can find detailed description of the patterns and techniques used to write this code:
+
+<a href="http://goo.gl/gKEsIo"><img src="http://www.packtpub.com/sites/default/files/1820OS.jpg"></a>
+
+We've learned a lot while using and supporting AngularJS on the [mailing list](https://groups.google.com/group/angular) and would like to share our experience. 
 
 ## Stack