Finish DB docs for Rackspace
diff --git a/rackspace/db/v1/instances/doc.go b/rackspace/db/v1/instances/doc.go
index 98a1bb3..0c8ad63 100644
--- a/rackspace/db/v1/instances/doc.go
+++ b/rackspace/db/v1/instances/doc.go
@@ -1 +1,3 @@
+// Package instances provides information and interaction with the instance API
+// resource in the Rackspace Database service.
 package instances