Merge pull request #386 from katgironpe/master

Added SMACSS book

free-programming-books.md

@@ -626,8 +626,9 @@
 * [HTML5 Canvas](http://chimera.labs.oreilly.com/books/1234000001654/index.html) - Steve Fulton & Jeff Fulton
 * [HTML5 for Publishers](http://chimera.labs.oreilly.com/books/1234000000770/index.html) - Sanders Kleinfeld
 * [HTML5 For Web Designers](http://html5forwebdesigners.com/) - Jeremy Keith
-* [Learn CSS Layout](http://learnlayout.com/)
 * [Learn HTML5 Programming From Scratch](https://www.udemy.com/learn-html5-programming-from-scratch/)
+* [Learn CSS Layout](http://learnlayout.com/)
+* [Scalable and Modular Architecture for CSS](http://smacss.com) - Jonathan Snook
 
 
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