The package joins arguments of xcodebuild and returns a string prepared to executing in shell.
$ npm install gulp-xcodebuild
var gulp = require('gulp');
var shell = require('gulp-shell');
var xcodebuild = require('gulp-xcodebuild');
gulp.task('build', shell.task([{
xcodebuild({
workspace: "./Example.xcworkspace",
sdk: "iphoneos9.3",
scheme: "Example"
}, 'build')
], {verbose: true}));
gulp.task('default', ['build']);