Added README.

Author: khmarbaise

README.md

@@ -0,0 +1,13 @@
+Plexus-IO
+=========
+
+[![Build Status](https://travis-ci.org/codehaus-plexus/plexus-io.svg?branch=master)](https://travis-ci.org/codehaus-plexus/plexus-io)
+[![Maven Central](https://img.shields.io/maven-central/v/org.codehaus.plexus/plexus-io.svg?label=Maven%20Central)](http://search.maven.org/#search%7Cga%7C1%7Cg%3A%22org.codehaus.plexus%22%20a%3A%plexus-io%22)
+
+The current master is now at https://github.com/codehaus-plexus/plexus-io
+
+For publishing [the site](https://codehaus-plexus.github.io/plexus-io/) do the following:
+
+```
+mvn -Preporting verify site site:stage scm-publish:publish-scm
+```