Added new course for clojure (#8913)

courses/free-courses-en.md

@@ -312,6 +312,7 @@
 
 * [Clojure language Tutorial - for Beginners](https://www.youtube.com/watch?v=zFPiPBIkAcQ)
 * [Functional Programming with Clojure](http://mooc.fi/courses/2014/clojure/)
+* [Poetry of Programming - Clojure for Beginners](https://youtube.com/playlist?list=PLI-mrGTUXmHXeKhy6UGdDxIKwM8L4MTbq) - Attila EGRI-NAGY
 
 
 ### Cloud Computing