gruntfile Generator 
Create a gruntfile module with Yeoman, including nodeunit unit tests.
This generator is based of grunt-init-gruntfile, authored by the magnificient GruntJS team.
Maintained by Addy Osmani.
Installation
Install this generator by running: npm install -g generator-gruntfile.
Usage
At the command-line, cd into an empty directory, run this command and follow the prompts.
yo gruntfile
Note that this template will generate files in the current directory, so be sure to change to a new directory first if you don't want to overwrite existing files.