gulpfile.js

var gulp = require('gulp');

var SOURCE_PACKAGE_JSON = './package.json';
var DEST_PACKAGE_JSON = './build/npm';

var SOURCE_README = '*.md';
var DEST_README = './build/npm';

gulp.task('default', function (done) {
  gulp.src(SOURCE_PACKAGE_JSON).pipe(gulp.dest(DEST_PACKAGE_JSON));

  gulp.src(SOURCE_README).pipe(gulp.dest(DEST_README));

  done();
});