Add possibility to manage file permissions of config files

Fixes-bug: PROD-36555
Change-Id: Iff0e00cf560f25daf1fd4d9e2d698b02c8e0a0d2
diff --git a/README.rst b/README.rst
index 3d87973..73eba31 100644
--- a/README.rst
+++ b/README.rst
@@ -165,6 +165,38 @@
           storage:
             max_retries: 10
 
+
+Change files/directories permissions for panko service:
+=======================================
+In order to change file permissions the following should be set:
+
+'files' - block to set permissions for files.
+- full path to file
+- user ( default value is 'root' ) this parameter is optional.
+- group ( default value is 'panko' ) this parameter is optional
+- mode ( default value is '0640' ) this parameter is optional
+
+'directories' - block to set permissions for directories.
+- full path to directory
+- user ( default value is 'root' ) this parameter is optional
+- group ( default value is 'panko' ) this parameter is optional
+- mode ( default value is '0750' ) this parameter is optional
+
+.. code-block:: yaml
+
+    panko:
+      files:
+        /etc/panko/panko.conf:
+          user: 'root'
+          group: 'panko'
+          mode: '0750'
+      directories:
+        /etc/panko:
+          user: 'root'
+          group: 'panko'
+          mode: '0750'
+
+
 More information
 ================