simplified site publish command: site-deploy

Author: hboutemy

README.md

@@ -11,6 +11,6 @@ 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
+mvn -Preporting verify site-deploy
 ```