Add BFS and DFS for tree.

trekhleb · trekhleb · commit a672474accb6 · 2018-04-25T17:44:24.000+03:00
diff --git a/README.md b/README.md
@@ -111,7 +111,7 @@ npm test -- -t 'playground'
 
 ## Useful links
 
-* [Data Structures and Algorithms on YouTube 📹](https://www.youtube.com/playlist?list=PLLXdhg_r2hKA7DPDsunoDZ-Z769jWn4R8)
+[▶ Data Structures and Algorithms on YouTube](https://www.youtube.com/playlist?list=PLLXdhg_r2hKA7DPDsunoDZ-Z769jWn4R8)
 
 ## Useful Information
 
