Update users_comments.md

AtsushiSakai · web-flow · commit b762fd036e35 · 2019-08-15T09:00:42.000+09:00
diff --git a/users_comments.md b/users_comments.md
@@ -355,6 +355,14 @@ Thanks for PythonRobotics!
 
 --Nick V
 
+---
+
+Dear AtsushiSakai, thank you so much for this material, it's so useful to me, i'm really glad with it =D
+
+--Juanda
+
+---
+
 
 # Citations
 
