Adding doc.go files for packages
diff --git a/openstack/identity/v3/endpoints/doc.go b/openstack/identity/v3/endpoints/doc.go
index 7d38ee3..8516394 100644
--- a/openstack/identity/v3/endpoints/doc.go
+++ b/openstack/identity/v3/endpoints/doc.go
@@ -1,3 +1,6 @@
-// Package endpoints queries and manages service endpoints.
-// Reference: http://developer.openstack.org/api-ref-identity-v3.html#endpoints-v3
+// Package endpoints provides information and interaction with the service
+// endpoints API resource in the OpenStack Identity service.
+//
+// For more information, see:
+// http://developer.openstack.org/api-ref-identity-v3.html#endpoints-v3
package endpoints
diff --git a/openstack/identity/v3/services/doc.go b/openstack/identity/v3/services/doc.go
index c4772c0..fa56411 100644
--- a/openstack/identity/v3/services/doc.go
+++ b/openstack/identity/v3/services/doc.go
@@ -1,4 +1,3 @@
-/*
-Package services queries and manages the service catalog.
-*/
+// Package services provides information and interaction with the services API
+// resource for the OpenStack Identity service.
package services
diff --git a/openstack/identity/v3/tokens/doc.go b/openstack/identity/v3/tokens/doc.go
index 02fce0d..76ff5f4 100644
--- a/openstack/identity/v3/tokens/doc.go
+++ b/openstack/identity/v3/tokens/doc.go
@@ -1,6 +1,6 @@
-/*
-Package tokens defines operations performed on the token resource.
-
-Documentation: http://developer.openstack.org/api-ref-identity-v3.html#tokens-v3
-*/
+// Package tokens provides information and interaction with the token API
+// resource for the OpenStack Identity service.
+//
+// For more information, see:
+// http://developer.openstack.org/api-ref-identity-v3.html#tokens-v3
package tokens