Doc update

README.md

@@ -1,7 +1,8 @@
-# SUDO Controls
+<p align="center"><img src="logo.png" alt="SUDO Controls Logo"></p>
+
 SUDO Controls is a light-weight **SUDO fragments/rules** distribution & management framework which:
 
-* uses a **desired state** model: SUDO Controls pushes fragments from a master (or slave) server onto client host(s) and applies them according to the central configuration.
+* uses a **desired state** model: SUDO Controls *pushes* fragments from a master (or slave) server onto client host(s) and applies them according to the central configuration.
 
 * uses **SSH** as **transport** mechanism: SUDO Controls connects to client hosts through the secure path of SSH.
 
@@ -11,7 +12,9 @@ SUDO Controls is a light-weight **SUDO fragments/rules** distribution & manageme
 
 * uses a **two-stage** approach to activate **SUDO fragments**: copy (or distribute) and apply. Fragments are first copied into a temporary location on each client hosts - the holding directory - and not applied automatically. Applying or activating fragments on a client host is a separate operation which can be triggered either locally or remotely (from the SUDO master)
 
-* allows the use of (nested) **groups** in the master configuration: fragments and hosts can be grouped in the SUDO master configuration files to allow a simplified configuration. Nesting of groups is allowed up to one level deep.
+* allows the use of (nested) **groups** in the master configuration: fragments and hosts can be grouped in the SUDO master configuration files to allow a simplified configuration. Nesting of groups is allowed up to *5 levels* deep.
+
+* allow the use of (nested) **groups** in the specification of the *push* targets. Either via the --targets command-line parameter or via the `targets` configuration file.
 
 * can discover SSH host public keys to (re)create `known_hosts` file(s) for a large amount of hosts
 
@@ -20,3 +23,5 @@ SUDO Controls is a light-weight **SUDO fragments/rules** distribution & manageme
 * is **easy** to **configure** and **maintain** (command-line based): the configuration is stored in a limited number of flat files and be easily updated. A very rudimentary syntax checking facility is also available to check the consistency of the most important (master) configuration files.
 
 More documentation can be found at http://www.kudos.be/Projects/SUDO_Controls.html
+
+*Logo created with [Free Logo Maker](https://logomakr.com)*