Adding get port operation
diff --git a/openstack/networking/v2/apiversions/requests.go b/openstack/networking/v2/apiversions/requests.go
index 31e07fd..570b9e8 100644
--- a/openstack/networking/v2/apiversions/requests.go
+++ b/openstack/networking/v2/apiversions/requests.go
@@ -5,12 +5,15 @@
 	"github.com/rackspace/gophercloud/pagination"
 )
 
+// ListVersions lists all the Neutron API versions available to end-users
 func ListVersions(c *gophercloud.ServiceClient) pagination.Pager {
 	return pagination.NewPager(c, APIVersionsURL(c), func(r pagination.LastHTTPResponse) pagination.Page {
 		return APIVersionPage{pagination.SinglePageBase(r)}
 	})
 }
 
+// ListVersionResources lists all of the different API resources for a particular
+// API versions. Typical resources for Neutron might be: networks, subnets, etc.
 func ListVersionResources(c *gophercloud.ServiceClient, v string) pagination.Pager {
 	return pagination.NewPager(c, APIInfoURL(c, v), func(r pagination.LastHTTPResponse) pagination.Page {
 		return APIVersionResourcePage{pagination.SinglePageBase(r)}