Identity v3 Projects Delete (#166)

diff --git a/openstack/identity/v3/projects/results.go b/openstack/identity/v3/projects/results.go
index c828ff8..5a29657 100644
--- a/openstack/identity/v3/projects/results.go
+++ b/openstack/identity/v3/projects/results.go
@@ -19,6 +19,11 @@
 	projectResult
 }
 
+// DeleteResult temporarily contains the response from the Delete call.
+type DeleteResult struct {
+	gophercloud.ErrResult
+}
+
 // Project is a base unit of ownership.
 type Project struct {
 	// IsDomain indicates whether the project is a domain.