Add amazing Ember.js tutorial (#5677)

https://yoember.com/

books/free-programming-books-langs.md

@@ -1168,6 +1168,7 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 * [Ember App with RailsApi](https://dockyard.com/blog/ember/2013/01/07/building-an-ember-app-with-rails-api-part-1)
 * [Ember.js - Getting started](https://guides.emberjs.com/release/)
 * [Vic Ramon's Ember Tutorial](http://ember.vicramon.com)
+* [yoember.com](https://yoember.com)
 
 
 #### Express.js