Simple Server with BrowserSync

gulpfile.js

var gulp = require('gulp'),
    jade = require('gulp-jade'),
    browserSync = require('browser-sync').create(),
    reload = browserSync.reload;

gulp.task('jade', function() {
  gulp.src('./index.jade')
  .pipe(jade())
  .pipe(gulp.dest('./'))
  .pipe(reload({stream:true}));
});

gulp.task('serve', ['jade'], function () {

  // Cria o server
  browserSync.init({
    server: {
      baseDir: "./"
    }
  });

  // inicia o watch
  gulp.watch(['./**/*.jade','./**/*.css','./assets/js/main.js'], ['jade']);
});