volofile run command with stdout direct to file does not work

[jrburke]

From: http://groups.google.com/group/volojs/browse_thread/thread/7cbb82a336daa59c

npm install css-b64-images

(from https://github.com/Filirom1/css-base64-images)

then create a volofile that does this:

module.exports = {
    imageembed: {
        summary: 'embed images in css',
        run: 'n.css-b64-images main.css > built.css'
    }
};

The output is visible in console instead of going to the file.