Adapted to generator-webapp

feel free to deny this to hell. I'm just doing it for my own learning. however I think there are some useful bits here so maybe you might want to merge ::shrug::
Either way it would be nice if you had a spare moment to clone it and give it a test (pretty please)
Ok so for starters I adapted it to yeoman webapp, used their gruntfile and usemin tasks to do the sass and concat/minification.

Now you've got access to grunt serve for local testing and grunt build for creating dist

Also theres jshint added and autoprefixer and imagemin/svgmin and so on. Also did things like use bower normalize.scss instead of regular. And some other things.