Added missing export of the delete proc

Nim/Examples/QtObjectMacro/Contact.nim

@@ -6,7 +6,7 @@ QtObject:
   type Contact* = ref object of QObject
     m_name: string
 
-  proc delete(self: Contact) = 
+  proc delete*(self: Contact) = 
     var qobject = self.QObject
     qobject.delete()
 

Nim/Examples/SlotsAndProperties/Contact.nim

@@ -5,11 +5,11 @@ import NimQml
 type Contact = ref object of QObject 
   m_name: string
 
-proc delete(self: Contact) = 
+proc delete*(self: Contact) = 
   var qobject = self.QObject
   qobject.delete()
 
-proc create(self: Contact) =
+proc create*(self: Contact) =
   var qobject = self.QObject
   qobject.create()
   self.m_name = "InitialName"