link fix Directory of free Javascript ebooks and sorting in alphabetical order

free-programming-books.md

@@ -1376,6 +1376,7 @@
 * [Crockford's JavaScript](http://www.crockford.com/javascript/) - Douglas Crockford
 * [Dev Docs](http://devdocs.io)
 * [Developing Backbone.js Applications](http://addyosmani.github.io/backbone-fundamentals/) - Addy Osmani
+* [Directory of free Javascript ebooks](http://jsbooks.revolunet.com/)
 * [Eloquent JavaScript 2nd edition](http://eloquentjavascript.net) - Marijn Haverbeke
 * [Exploring ES6](http://exploringjs.com/es6/) - Dr. Axel Rauschmayer
 * [Google JavaScript Style Guide](https://google.github.io/styleguide/javascriptguide.xml)
@@ -1408,7 +1409,6 @@
 * [Understanding ECMAScript 6](https://leanpub.com/understandinges6/read) - Nicholas C. Zakas
 * [Understanding JavaScript OOP](http://robotlolita.me/2011/10/09/understanding-javascript-oop.html) *(Sorella)*
 * [You Don't Know JS](https://github.com/getify/You-Dont-Know-JS)
-* [Directory of free Javascript ebooks](https://github.com/revolunet/JSbooks)
 
 
 #### Javascript Frameworks