Rackspace Auto Scale: Add webhooks Delete()
diff --git a/rackspace/autoscale/v1/webhooks/results.go b/rackspace/autoscale/v1/webhooks/results.go
index 9628724..2774dd3 100644
--- a/rackspace/autoscale/v1/webhooks/results.go
+++ b/rackspace/autoscale/v1/webhooks/results.go
@@ -53,6 +53,11 @@
 	gophercloud.ErrResult
 }
 
+// DeleteResult represents the result of a delete operation.
+type DeleteResult struct {
+	gophercloud.ErrResult
+}
+
 // Webhook represents a webhook associted with a scaling policy.
 type Webhook struct {
 	// UUID for the webhook.