Improve Composum Nodes README.md to improve youtube presentation

README.md

@@ -1,6 +1,10 @@
 # [Composum](https://www.composum.com/home.html)
 
-yet another Apache Sling based Application Platform (asap)
+Composum is a free open source Apache Sling based application platform featuring a component based architecture. It 
+provides a set of tools and a framework to make it easy to use the Apache Sling framework as a general application 
+platform. Create your own CMS - bring back the fun to Content Management!
+
+Composum Nodes is a part of Composum, but can be used standalone on any Sling or AEM instance.
 
 ## [Composum Nodes](https://www.composum.com/home/nodes.html)
 
@@ -20,6 +24,10 @@ Usage: just open
 
 on your Sling or AEM instance.
 
+[Click for a 6min quick tour of Composum Nodes](https://www.youtube.com/watch?v=XnKh6RDlVFE&list=PLVV3ymfKFUCPnW_Pl7CQGfgsLuZx0KxSj)
+
+![A screenshot of the Composum Nodes JCR Browser](https://www.composum.com/assets/console/browser/browser-props.png)
+
 * [Composum Nodes Homepage](https://www.composum.com/home/nodes.html)
 * [Maven Build reports, incl. Javadoc](https://ist-dresden.github.io/composum-nodes/index.html)