revision strategy

gulpfile.js

@@ -102,6 +102,7 @@ gulp.task( 'rev', function() {
     .pipe(rev())
     .pipe(gulp.dest('./'))  // write rev'd assets to build dir
     .pipe(rev.manifest())
+    .pipe(revDel({dest: './'}))
     .pipe(gulp.dest('./'));  // write manifest to build dir
 });
 

package.json

@@ -51,6 +51,7 @@
     "gulp-watch": "5.0.0",
     "merge2": "^1.2.1",
     "popper.js": "^1.12.9",
+    "rev-del": "^1.0.5",
     "run-sequence": "^2.2.1",
     "undescores-for-npm": "^1.0.0",
     "gulp-autoprefixer": "^5.0.0"