updated readme

Author: MephestoKhaan

Assets/EventVisualizer/Editor/EdgeGUI.cs.meta

@@ -10,9 +10,14 @@ outputs are any type of UnityEvent (custom ones supported as well!) and inputs a
 ##How
 
 - Select ```Windows/Events Graph Editor``` you can open the graph.
+- Select any root gameobject(s) and click on ```Rebuild on selected hierarchy``` to generate a graph
+of all events being fired by the selected hierarchy, or  ```Rebuild JUST selected``` to generate a
+graph of all events being fired by exactly the selected gameobjects. You can deselect everything and 
+click any of the buttons to generate the graph of the entire scene, but beware for massive graphs!
 - Click on any node to highlight that gameobjects in your hiearchy.
 Alternatively right-click on any element in the hierarchy and select ```UnityEventGraph/FindThis``` 
-to highlight it in the graph.
+to highlight it in the graph. Or ```UnityEventGraph/Graph Just This``` and  ```UnityEventGraph/Graph This Hierarchy``` 
+in order to create a graph starting just in this gameobject or any of its children respectively.
 - From the graph you can also activate the Scene View Graph https://www.youtube.com/watch?v=IhG0LRFLmdo.
 - Check the scene under /Demo