Gulp Serve

[Yago]

Split Default task and Serve task with something like :

gulp.task('default', ['vendors', 'styles', 'scripts']);

gulp.task('serve', function () {
  browserSync.init(['styleguide/*.html'], {
    server: {
      baseDir: ['./']
    },
    notify: false
  });

  gulp.watch('assets/sass/**/*.scss', ['styles', 'styleguide']);
  gulp.watch('assets/js/*.js', ['scripts', 'styleguide']);
});