readme suggestion not working

[Kevin Munns]

Readme says to use:

          files: {
                'main.html': 'html/main-template.html'
            }   

but that doesn't work. This seems to work for me.

        default_options: {
            files: {
                'main.html': 'html/main-template.html'
            }
        }

[Vincent]

Same here, options need to be in a target.