fix #195: Remove orphaned routes;
add documentation (help.txt);
add & update copyright header;
add a lot of missing @Override annotations
fix build by providing the updated lib dependency
Merge branch 'delete-orphan-routes' of https://github.com/loxal/cf-java-client into loxal-delete-orphan-routes
Merge branch 'loxal-delete-orphan-routes'