Missing assets folder, I add it but it disappears after serve or build

I was just wondering if there is any easy way to correct this. I know were in beta, however I cannot seem to figure out why except for the gulp file showing the following lines …
gulp.task(‘clean’, function(){
return del(‘www/build’);
});

I see that its rebuilding the build folder, thats cool, but it didn’t delete the assets folder before in previous beta versions.

Im not a gulp master, so if anyone can help i would greatly appreciate it.
NPM up to date, and latest beta as well.

Where exactly is the assets folder located? It should not be under the build folder because it’s recreated on every rebuild, i.e. its contents are deleted/lost. If you’re keeping it at other location then maybe there’s something wrong with the gulp task that copies it on serve/build.