add doc.go files to subpackages
diff --git a/openstack/storage/v1/accounts/doc.go b/openstack/storage/v1/accounts/doc.go
new file mode 100644
index 0000000..5c94e1a
--- /dev/null
+++ b/openstack/storage/v1/accounts/doc.go
@@ -0,0 +1,5 @@
+/* The accounts package defines operations performed on an object-storage account.
+
+Reference: http://developer.openstack.org/api-ref-objectstorage-v1.html#storage_account_services
+*/
+package accounts
diff --git a/openstack/storage/v1/containers/doc.go b/openstack/storage/v1/containers/doc.go
new file mode 100644
index 0000000..9b6ac17
--- /dev/null
+++ b/openstack/storage/v1/containers/doc.go
@@ -0,0 +1,5 @@
+/* The containers package defines operations performed on an object-storage container.
+
+Reference: http://developer.openstack.org/api-ref-objectstorage-v1.html#storage_container_services
+*/
+package containers
diff --git a/openstack/storage/v1/objects/doc.go b/openstack/storage/v1/objects/doc.go
new file mode 100644
index 0000000..2a7461b
--- /dev/null
+++ b/openstack/storage/v1/objects/doc.go
@@ -0,0 +1,5 @@
+/* The objects package defines operations performed on an object-storage object.
+
+Reference: http://developer.openstack.org/api-ref-objectstorage-v1.html#storage_object_services
+*/
+package objects