Creates a new invalidation request
            :see: http://goo.gl/8vECq

def create_invalidation_request(self, distribution_id, paths,
                                    caller_reference=None):
        """Creates a new invalidation request
            :see: http://goo.gl/8vECq
        """
        # We allow you to pass in either an array or
        # an InvalidationBatch object
        if not isinstance(paths, InvalidationBatch):
            paths = InvalidationBatch(paths)
        paths.connection = self
        uri = '/%s/distribution/%s/invalidation' % (self.Version,
                                                    distribution_id)
        response = self.make_request('POST', uri,
                                     {'Content-Type' : 'text/xml'},
                                     data=paths.to_xml())
        body = response.read()
        if response.status == 201:
            h = handler.XmlHandler(paths, self)
            xml.sax.parseString(body, h)
            return paths
        else:
            raise CloudFrontServerError(response.status, response.reason, body)