Adds an option to a Config instance
		IN: option (type: Option)

def add(self, option):
		"""
		Adds an option to a Config instance
		IN: option (type: Option)
		"""		
		if option.__class__ == Option:
			for _option in self.options:
				if option.name == _option.name:
					raise OptionDuplicateError(_option.name)
			self.options.append(option)
		else:
			raise TypeError("invalid type supplied")