gulpfiles ref: http://qiita.com/cognitom/items/dfbac22c02a7ffa957aa

file0.txt

$ npm install -g gulp
$ npm install -g gulp-straw

file1.txt

$ straw setup

file2.txt

$ straw install gulpfile
$ straw install task/css

file3.txt

$ straw install cognitom:gulpfile
$ straw install cognitom:task/css

file4.txt

var gulp        = require('gulp');
var del         = require('del');
var runSequence = require('run-sequence');
var requireDir  = require('require-dir');
var dir         = requireDir('./task');

gulp.task('default', function (cb){
  runSequence('clean', 'icon', 'build', cb); // gulp.js 3.xでの書き方
});

gulp.task('clean', function(cb){
  del(['./dist'], cb);
});

gulp.task('watch', function(){
  gulp.watch(['src/icon/*.svg'], { debounceDelay: 1000 }, ['icon']);
});