Add: The Official Raspberry Pi Project Book (#2513)

* Add: The Official Raspberry Pi Project Book

* Add: The Official Raspberry Pi Project Book + Format

free-programming-books.md

@@ -1998,6 +1998,7 @@ For resources on Angular, Backbone, D3, Dojo, Ember, Express, jQuery, Knockout,
 * [Raspberry Pi Cookbook for Python Programmers](https://www.packtpub.com/packt/free-ebook/python-raspberry-pi-cookbook) - Tim Cox, Packt. *(Just fill the fields with any values)*
 * [Raspberry Pi: Measure, Record, Explore](https://leanpub.com/RPiMRE)
 * [Raspberry Pi Users Guide](http://www.cs.unca.edu/~bruce/Fall14/360/RPiUsersGuide.pdf) - Eben Upton (PDF)
+* [The Official Raspberry Pi Project Book](https://www.raspberrypi.org/magpi-issues/Projects_Book_v1.pdf) (PDF)
 
 
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