def add_exit(self):
        """ adds the exits from the application """
        self.completable.append("quit")
        self.completable.append("exit")

        self.descrip["quit"] = "Exits the program"
        self.descrip["exit"] = "Exits the program"

        self.command_tree.add_child(CommandBranch("quit"))
        self.command_tree.add_child(CommandBranch("exit"))

        self.command_param["quit"] = ""
        self.command_param["exit"] = ""
adds the exits from the application