maven-archetype-plugin-site is an archetype which generates a sample Maven plugin's site:
project |-- pom.xml `-- src `-- site |-- apt | |-- examples | | `-- example.apt | |-- index.apt | `-- usage.apt |-- markdown | |-- markdown.md | `-- markdown-velocity.md.vm `-- site.xml
This archetype can be layered upon an existing Maven project.