Specifying scaffold filename format

[voveph]

When running:

ruhoh posts new "Hello World"

I'd like the generated file to have the following filename:

2014-04-hello-world.md

instead of:

hello-world.md

I have tried to pre-define the filename variable through the _scaffold.html file's front-matter and through the config.yml, without success. Is this possible or on the roadmap?

Thanks!