Finish DB docs for Rackspace
diff --git a/rackspace/db/v1/datastores/requests.go b/rackspace/db/v1/datastores/requests.go
index 767bdc3..9e147ab 100644
--- a/rackspace/db/v1/datastores/requests.go
+++ b/rackspace/db/v1/datastores/requests.go
@@ -5,6 +5,7 @@
 	"github.com/rackspace/gophercloud/pagination"
 )
 
+// List will list all available datastore types that instances can use.
 func List(client *gophercloud.ServiceClient) pagination.Pager {
 	pageFn := func(r pagination.PageResult) pagination.Page {
 		return DatastorePage{pagination.SinglePageBase(r)}
@@ -12,6 +13,7 @@
 	return pagination.NewPager(client, baseURL(client), pageFn)
 }
 
+// Get will retrieve the details of a specified datastore type.
 func Get(client *gophercloud.ServiceClient, datastoreID string) GetResult {
 	var res GetResult
 
@@ -23,6 +25,8 @@
 	return res
 }
 
+// ListVersions will list all of the available versions for a specified
+// datastore type.
 func ListVersions(client *gophercloud.ServiceClient, datastoreID string) pagination.Pager {
 	pageFn := func(r pagination.PageResult) pagination.Page {
 		return VersionPage{pagination.SinglePageBase(r)}
@@ -30,6 +34,7 @@
 	return pagination.NewPager(client, versionsURL(client, datastoreID), pageFn)
 }
 
+// GetVersion will retrieve the details of a specified datastore version.
 func GetVersion(client *gophercloud.ServiceClient, datastoreID, versionID string) GetVersionResult {
 	var res GetVersionResult