Update readme

README.md

@@ -77,26 +77,27 @@ IVMI-node are the main components of any IVMI instruments. IVMI-node contains IV
 ``` python
 extends IvmiNode
 
-func _ready():
+func _ready() -> void :
     # Call default IvmiNode constructor
     super._ready()
-
-	# Optionally define a node type
-	_set_ivmi_type("my_node")
-	
+    
+    
 	# Add custom properties with array of values
 	_add_property("selected", [0])
+
+	# [Optionally define a node type]
+	_set_ivmi_type("my_node")
     
-    # Properties are sent by default, optionnally deactivate sending
+    # [Properties are sent by default, optionnally deactivate sending]
     _properties["selected"].set_listen(false)
 	
     
-func process(delta) : 
+func _process(delta : float) -> void : 
     # Call default IvmiNode processing, required for updates
     super._process(delta)
     
 
-func _set_property(prop, vals) :
+func _set_property(prop : String, vals : Array) -> void :
 	# Call default properties handling
 	super._set_property(prop, vals)
 	
@@ -146,7 +147,14 @@ TODO
 
 ### Android based headset
 
-TODO
+Use CompabilityGL Rendering Mode 
+
+#### Activating Passthrough
+
+* Add an environment with a custom color background and an alpha value of 0
+* Activate Optional or Requested Passthrough in the Android Export configuration
+* Toggle passthrough in the IvmiScene XR properties
+
 
 ### Stereoscopic displays