Allow custom cn/dest_path meta information for feed nodes
Added new option tag.menu.tracking_style

Can be used with custom menu templates to track the content of the
found nodes instead of the meta information.
Fixed auto-generate mode when not in website directory
Complete help page is not shown anymore when an error occurs during command line parsing
Added new option tag.date.mi

This allows formatting of any date/time meta information with
the date tag.
Added Ruby 2.1.0 to travis.yml, now skipping tests for maruku