You can clone with
$ yo --version
$ yo webapp
Out of the box I include HTML5 Boilerplate, jQuery and Modernizr.
Would you like to include Twitter Bootstrap for Sass? (Y/n) u
Would you like to include RequireJS (for AMD support)? (Y/n) k
(Y/n) must not accept either than Y/n?
We're working on an improved prompt implementation that will also have proper validation of your inputs.
@passy I'm interested in contributing a fix for this :)