Small method to return headers of an OPTIONS request to self.uri

		Args:
			None

		Return:
			(dict) response headers from OPTIONS request

def options(self):

		'''
		Small method to return headers of an OPTIONS request to self.uri

		Args:
			None

		Return:
			(dict) response headers from OPTIONS request
		'''

		# http request
		response = self.repo.api.http_request('OPTIONS', self.uri)
		return response.headers