Enhanced README

Author: khmarbaise

README.md

@@ -2,6 +2,15 @@ Plexus-Interpolation
 ===============
 
 [![Build Status](https://travis-ci.org/codehaus-plexus/plexus-interpolation.svg?branch=master)](https://travis-ci.org/codehaus-plexus/plexus-interpolation)
+[![Maven Central](https://img.shields.io/maven-central/v/org.codehaus.plexus/plexus-interpolation.svg?label=Maven%20Central)](http://search.maven.org/#search%7Cga%7C1%7Cg%3A%22org.codehaus.plexus%22%20a%3A%plexus-interpolation%22)
+
+The current master is now at https://github.com/codehaus-plexus/plexus-interpolation
 
 Components for interpolating `${}` strings and the like.
 
+For publishing [the site](https://codehaus-plexus.github.io/plexus-io/) do the following:
+
+```
+mvn -Preporting verify site site:stage scm-publish:publish-scm
+```
+