Add some explaining text to README.md

README.md

@@ -1,6 +1,11 @@
 # npmFrog
 
-A nice npmjs.org-like web interface for jFrog Artifactory
+>> A nice npmjs.org-like web interface for jFrog Artifactory
+
+To share frontend code inside your company between different projects and developers, you can use a private npm registry like Verdaccio or jFrog's Artifactory (which is often used for Maven dependency management in the Java Environment).
+The latter lacks of a good UI for web devlopers, so npmFrog will present you the self-hosted packages of your company in a more familiar and discoverable way.
+
+It's free and open source.
 
 ## Installation