Laravel Elixir + Vueify + Hot Reload. This will get you up and running with Browserify HMR + Vueify + BrowserSync in no time.

gulpfile.js

var elixir = require('laravel-elixir');
var gutil = require('gulp-util');


//  If 'gulp watch' is run
if (gutil.env._.indexOf('watch') > -1) {

  //  Enable watchify for faster builds
  elixir.config.js.browserify.watchify.enabled = true

  //  Add the browserify HMR plugin
  elixir.config.js.browserify.plugins.push({
    name: 'browserify-hmr',
    options: {}
  })

}

//  Default babel presets are ['es2015', 'react']
//  https://babeljs.io/docs/plugins/preset-stage-2/
elixir.config.js.babel.options.presets = ['es2015', 'stage-2'];

//  Add the vueify browserify transform
//  https://github.com/vuejs/vueify
elixir.config.js.browserify.transformers.push({
  name: 'vueify',
  options: {}
});

elixir(function (mix) {

  //  Compile the app entry point
  mix.browserify('vue.js')

  //  Compile sass
  mix.sass('app.scss')

  //  Since JS will be hot reloaded, browserSync only
  //  needs to be concerned with reloading css. You
  //  can adjust this to include php files as well.
  mix.browserSync({
    proxy: 'http://localhost:8888/hmr/public/',
    files: [ elixir.config.get('public.css.outputFolder') + '/**/*.css' ],
  });

});

package.json

{
  "private": true,
  "scripts": {
    "prod": "gulp --production",
    "dev": "gulp watch"
  },
  "devDependencies": {
    "babel-plugin-transform-runtime": "^6.7.5",
    "browserify-hmr": "^0.3.1",
    "gulp": "^3.9.1",
    "laravel-elixir": "^5.0.0",
    "vue-hot-reload-api": "^1.3.2",
    "vueify": "^8.3.9",
    "vueify-insert-css": "^1.0.0"
  },
  "dependencies": {
    "vue": "^1.0.21"
  }
}

elixir.config.js.babel.options.presets = ['es2015', 'stage-2'];
                        ^   Cannot read property 'options' of undefined

Couldn't get it working. "laravel-elixir": "^6.0.0-2", in package.json

elixir.config.js.browserify.watchify.enabled = true
                            ^

TypeError: Cannot read property 'watchify' of undefined
    at Object.<anonymous> (D:\Works\www\steel4web.com.br\admin\gulpfile.js:32:30)
    at Module._compile (module.js:541:32)
    at Object.Module._extensions..js (module.js:550:10)
    at Module.load (module.js:456:32)
    at tryModuleLoad (module.js:415:12)
    at Function.Module._load (module.js:407:3)
    at Module.require (module.js:466:17)
    at require (internal/module.js:20:19)
    at Liftoff.handleArguments (D:\Works\www\steel4web.com.br\admin\node_modules\gulp\bin\gulp.js:116:3)
    at Liftoff.<anonymous> (D:\Works\www\steel4web.com.br\admin\node_modules\liftoff\index.js:198:16)