Merge branch 'master' of github.com:HowProgrammingWorks/Semaphore

Author: tshemsedinov

README.md

@@ -1 +1,3 @@
-# Binary Semaphore, Counting Semaphore
+## Binary Semaphore, Counting Semaphore
+
+[![Семафоры и мьютексы в JavaScript и Node.js](https://img.youtube.com/vi/JNLrITevhRI/0.jpg)](https://www.youtube.com/watch?v=JNLrITevhRI)