Add documentation for the new maven integration goals take 2

This is a replacement for #160 without integration tests for the examples.
Distribution is a little bit bigger than before because one pom and
one integration test is added to examples.
Use extend for integration-tests, fix contributor name
Merge pull request #161 from mfriedenhagen/documentation-for-maven-integration-goals-without-integration-tests

Add documentation for the new maven integration goals take 2