Add restore script for Maas DB

Change-Id: I8e758900f55aabde167feb5f9544b0d9507da570
diff --git a/README.rst b/README.rst
index f6c1f9f..71c356d 100644
--- a/README.rst
+++ b/README.rst
@@ -215,6 +215,16 @@
         enabled: true
         role: master/slave
 
+MAAS region service with backup data
+
+.. code-block:: yaml
+    maas:
+      region:
+        database:
+          initial_data:
+            source: cfg01.local
+            host: 192.168.0.11
+
 Module function's example:
 ==========================
 
@@ -298,4 +308,4 @@
 Any questions or feedback is always welcome so feel free to join our IRC
 channel:
 
-    #salt-formulas @ irc.freenode.net
+    #salt-formulas @ irc.freenode.net
\ No newline at end of file