就是只有一个webview的app给网站套个app的壳，为什么会有5.6M这么大，我应该怎么build才能缩小体积？我看淘票票的ios app才700k这么小，求助

代码就是这么简单的一个：

import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var webview: UIWebView!
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        let url = URL(string: "http://mysite.com/wap")
        let request = URLRequest(url: url!)
        
        webview.loadRequest(request)
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


}