will be updated.

gulpfile.js

// plugins
var gulp = require('gulp');
var del = require('del');
var webserver = require('gulp-webserver');
var sass = require('gulp-sass');
var pleeease = require('gulp-pleeease');
var changed = require('gulp-changed');
var usemin = require('gulp-usemin');
var uglify = require('gulp-uglify');
var minifyHtml = require('gulp-minify-html');
var minifyCss = require('gulp-minify-css');
//var rev = require('gulp-rev');


/**
 * tasks
 */
gulp.task('webserver', function() {
	gulp.src('./src').pipe(webserver({
		host: 'localhost',
		port: 8000,
		livereload: true,
		directoryListing: false,
		open: true
    }));
});

gulp.task('watch', function() {
	gulp.watch('./src/**/*.html', function(event) {});
	gulp.watch('./src/**/sass/*.scss', ['sass']);
});

gulp.task('sass', function(event) {
    gulp.src('./src/sass/*.scss')
        .pipe(sass())
        .pipe(pleeease({
        	autoprefixer: {
        		browsers: [ 'last 2 versions', 'ie >= 7' ]
        	},
        	minifier: false
        }))
        .pipe(gulp.dest('./src/css'));
});

gulp.task('clean', function(cb) {
  del([ './dest', './tmp', './**/*.log' ], cb);
});

gulp.task('usemin', function() {
  gulp.src('./src/**/*.html')
    .pipe(usemin({
      css: [minifyCss(), 'concat'],
      //html: [minifyHtml({empty: true})],
      js: [uglify()]
    }))
    .pipe(gulp.dest('./dest/'));
});


gulp.task('default', [ 'webserver', 'watch' ]);
gulp.task('release', [ 'clean', 'usemin' ])