Merge pull request #1822 from TiaanDuPlessis/master

Add books

free-programming-books.md

@@ -912,6 +912,7 @@ Original Source: [List of freely available programming books](http://web.archive
 
 * [CoffeeScript Cookbook](https://coffeescript-cookbook.github.io)
 * [CoffeeScript Ristretto](https://leanpub.com/coffeescript-ristretto/read) - Reginald Braithwaite
+* [Hard Rock CoffeeScript](http://hardrockcoffeescript.org)
 * [Smooth CoffeeScript](http://autotelicum.github.io/Smooth-CoffeeScript/SmoothCoffeeScript.html)
 * [The Little Book on CoffeeScript](http://arcturo.github.io/library/coffeescript/)
 
@@ -1165,6 +1166,7 @@ Original Source: [List of freely available programming books](http://web.archive
 * [A free guide to learn HTML and CSS](http://marksheet.io)
 * [Adaptive Web Design](http://adaptivewebdesign.info/1st-edition/) - Aaron Gustafson
 * [An advanced guide to HTML&CSS](http://learn.shayhowe.com/advanced-html-css/)
+* [Canvassing](http://learnjs.io/canvassing/read)
 * [Code Guide: Standards for developing flexible, durable, and sustainable HTML and CSS](http://mdo.github.io/code-guide/) - Mark Otto
 * [Dive Into HTML5](http://diveintohtml5.info) - Mark Pilgrim ([PDF](http://mislav.net/2011/10/dive-into-html5/))
 * [GA Dash](https://dash.generalassemb.ly)
@@ -1175,6 +1177,7 @@ Original Source: [List of freely available programming books](http://web.archive
 * [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 CSS Layout the pedantic way](http://book.mixu.net/css/)
 * [Scalable and Modular Architecture for CSS](https://smacss.com) - Jonathan Snook
 * [Web Audio API](http://chimera.labs.oreilly.com/books/1234000001552) - Boris Smus
 
@@ -1630,6 +1633,7 @@ For resources on Angular, Backbone, D3, Dojo, Ember, Express, jQuery, Knockout,
 * Drupal Framework
   * Drupal 7
     * [The Tiny Book of Rules](https://www.drupal.org/files/tiny-book-of-rules.pdf) (PDF)
+* [Hacking with PHP](http://www.hackingwithphp.com) 
 * Laravel Framework
   * [Laravel 4 Official Documentation. Synced Daily](https://leanpub.com/laravel-5)
   * [Laravel: Code Bright](http://daylerees.com/codebright)
@@ -2066,6 +2070,7 @@ For resources on Angular, Backbone, D3, Dojo, Ember, Express, jQuery, Knockout,
 
 ### Swift
 
+* [Hacking with Swift](https://www.hackingwithswift.com)
 * [Learn Swift](http://books.aidanf.net/learn-swift)
 * [The Swift Programming Language](https://developer.apple.com/library/prerelease/ios/documentation/Swift/Conceptual/Swift_Programming_Language/index.html) (HTML)
 * [The Swift Programming Language](https://itunes.apple.com/us/book/swift-programming-language/id881256329?mt=11) (iBook)