update gulp usage

Author: cesine

.browserslistrc

@@ -0,0 +1 @@
+['last 2 versions']

gulpfile.js

@@ -1,52 +1,53 @@
-var gulp = require('gulp'),
-  $ = require('gulp-load-plugins')({
-    camelize: true
-  }),
-  runSequence = require('run-sequence')
+var gulp = require('gulp');
+var RevAll = require("gulp-rev-all");
+
+$ = require('gulp-load-plugins')({
+  camelize: true
+});
 
 gulp.task('css', function() {
   return gulp.src('app/components/App/app.scss')
     .pipe($.sourcemaps.init())
     .pipe($.sass().on('error', $.sass.logError))
     .pipe($.autoprefixer({
-      browsers: ['last 2 versions'],
+      // browsers: ['last 2 versions'],
       cascade: false
     }))
     .pipe($.sourcemaps.write())
     .pipe(gulp.dest('./dist'))
 })
 
-gulp.task('css:watch', ['css'], function() {
+gulp.task('css:watch', gulp.series(['css'], function() {
   gulp.watch('app/**/*.scss', ['css'])
-})
+}))
 
 gulp.task('moveAssets', function() {
   return gulp.src('./app/assets/**/*')
     .pipe(gulp.dest('./dist/assets'))
 })
 
-gulp.task('build:revAssets', ['css', 'moveAssets'], function() {
-  var rev = new $.revAll()
+gulp.task('build:revAssets', gulp.series(['css', 'moveAssets'], function() {
+  // var rev = new $.revAll()
   return gulp.src('./dist/**/*')
-    .pipe(rev.revision())
+    .pipe(RevAll.revision())
     .pipe(gulp.dest('./dist/public'))
-    .pipe(rev.manifestFile())
+    .pipe(RevAll.manifestFile())
     .pipe(gulp.dest('./dist'))
-})
+}))
 
 gulp.task('build:cpServer', function() {
   return gulp.src('./app/**/*.{js,jsx,ejs}')
     .pipe(gulp.dest('./dist/server-build'))
 })
-gulp.task('build:revServer', ['build:cpServer'], function() {
+gulp.task('build:revServer', gulp.series(['build:cpServer'], function() {
   var manifest = gulp.src('./dist/rev-manifest.json')
   return gulp.src('./dist/server-build/{components,containers}/**/*')
     .pipe($.revReplace({
       manifest: manifest
     }))
     .pipe(gulp.dest('./dist/server-build'))
-})
+}))
 
-gulp.task('build', function() {
-  runSequence('build:revAssets', 'build:revServer')
-})
+gulp.task('build', gulp.series('build:revAssets', 'build:revServer', function (done) {
+    done();
+}));