Identity v3 Projects Create (#165)

* Identity v3 Projects Create

* Removing unused createErr function
diff --git a/openstack/identity/v3/projects/urls.go b/openstack/identity/v3/projects/urls.go
index 5effbfb..7be9dc2 100644
--- a/openstack/identity/v3/projects/urls.go
+++ b/openstack/identity/v3/projects/urls.go
@@ -9,3 +9,7 @@
 func getURL(client *gophercloud.ServiceClient, projectID string) string {
 	return client.ServiceURL("projects", projectID)
 }
+
+func createURL(client *gophercloud.ServiceClient) string {
+	return client.ServiceURL("projects")
+}