WEEK 4
TWITTER PROFIL :https://twitter.com/HichemThaalbi
RETWEET LINKS :1) https://twitter.com/HichemThaalbi/status/1023366739931930624
                        2)  https://twitter.com/HichemThaalbi/status/1023349556774404100

medium profil    : https://medium.com/@michelklila
medium 50 cl     : https://medium.com/uchain/announcing-our-first-ama-d3f9a1f53caf