Added Cinder Storage Pools API

Change-Id: I9b57058c313ae961fa90bc02f69dfd4be6afef03
diff --git a/openstack/blockstorage/extensions/schedulerstats/doc.go b/openstack/blockstorage/extensions/schedulerstats/doc.go
new file mode 100644
index 0000000..bd80711
--- /dev/null
+++ b/openstack/blockstorage/extensions/schedulerstats/doc.go
@@ -0,0 +1,19 @@
+/*
+Package schedulerstats returns information about block storage pool capacity
+and utilisation. Example:
+	listOpts := schedulerstats.ListOpts{
+		Detail: true,
+	}
+	allPages, err := schedulerstats.List(client, listOpts).AllPages()
+	if err != nil {
+		panic(err)
+	}
+	allStats, err := schedulerstats.ExtractStoragePools(allPages)
+	if err != nil {
+		panic(err)
+	}
+	for _, stat := range allStats {
+		fmt.Printf("%+v\n", stat)
+	}
+*/
+package schedulerstats