Added link to Udacity course in Complementary Resources (mbeaudru#66)

Author: CamHardy

readme.md

@@ -23,6 +23,7 @@ When you struggle to understand a notion, I suggest you look for answers on the
 - [You don't know JS (book)](https://github.com/getify/You-Dont-Know-JS)
 - [ES6 Features with examples](http://es6-features.org)
 - [WesBos blog (ES6)](http://wesbos.com/category/es6/)
+- [Javascript Basics for Beginners](https://www.udacity.com/course/javascript-basics--ud804) - a free Udacity course
 - [Reddit (JavaScript)](https://www.reddit.com/r/javascript/)
 - [Google](https://www.google.com/) to find specific blog and resources
 - [StackOverflow](https://stackoverflow.com/questions/tagged/javascript)