Add gulp-rev-all for future use

Gulpfile.js

@@ -4,6 +4,7 @@ let cleanCSS = require('gulp-clean-css');
 let uglify = require('gulp-uglify');
 let concat = require('gulp-concat');
 let gulpCopy = require('gulp-copy');
+let RevAll = require('gulp-rev-all');
 
 gulp.task('styles', () => {
   return gulp.src([
@@ -44,5 +45,13 @@ gulp.task('copy:html', () => {
 	.pipe(gulp.dest('dist'))
 })
 
+// Experimental
+gulp.task('cdn', () => {
+ return gulp
+    .src('dist/**')
+    .pipe(RevAll.revision({ dontRenameFile: ['.html', '.png', '.svg', '.jpeg', '.jpg']}))
+    .pipe(gulp.dest('cdn'));
+})
+
 gulp.task('copy', ['copy:images', 'copy:html', 'copy:fonts'])
 gulp.task('build', ['styles', 'scripts', 'copy']);