version the static files in html and css
Install package with NPM and add it to your development dependencies:
npm install --save-dev gulp-wind-assets-md5
var windmd5 = require('gulp-wind-assets-md5');
gulp.task('windmd5', function () {
gulp.src('./test/**/*')
.pipe(windmd5('./dest/', 8))
.pipe(gulp.dest('./dest/'));
});