Update: README.md

Author: Grizmu

README.md

@@ -842,7 +842,7 @@ Each row can contain:
 - Tag
 - Toggle to enable/disable GameObject
 - Icon
-
+- Tree Lines
 ![inspector](https://github.com/arimger/Unity-Editor-Toolbox/blob/develop/Docs/hierarchy.png)
 
 ### Project <a name="project"></a>