RunTimeTyped : Add todo

Author: johnhaddon

python/IECore/registerRunTimeTyped.py

@@ -68,6 +68,8 @@ def __registerTypeId( typeId, typeName, baseTypeId ) :
 # If `typeName` is not specified then the name of the class itself is used -
 # you may wish to provide an explicit typeName in order to prefix the name
 # with a module name.
+## \todo It feels like this could probably be done automatically using a
+# custom metaclass for RunTimeTyped?
 def registerRunTimeTyped( typ, typeName = None ) :
 
 	if typeName is None :