Update blockstorage v2 API
diff --git a/openstack/blockstorage/v2/extensions/volumeactions/doc.go b/openstack/blockstorage/v2/extensions/volumeactions/doc.go
new file mode 100644
index 0000000..0935fdb
--- /dev/null
+++ b/openstack/blockstorage/v2/extensions/volumeactions/doc.go
@@ -0,0 +1,5 @@
+// Package volumeactions provides information and interaction with volumes in the
+// OpenStack Block Storage service. A volume is a detachable block storage
+// device, akin to a USB hard drive. It can only be attached to one instance at
+// a time.
+package volumeactions