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

Author: tshemsedinov

README.md

@@ -1 +1,3 @@
-# Directed graph and Query language
+## Directed graph and Query language
+
+[![Графы и запросы к графовым структурам на JavaScript](https://img.youtube.com/vi/a0W0T8Yqw3s/0.jpg)](https://www.youtube.com/watch?v=a0W0T8Yqw3s)