_errorHandler = function (err) {
        self.phonegap.emit('error', err);
        callback(err);
    }
Serve the App.

Creates a local server to serve up the project. The intended
receiver is the PhoneGap App but any browser can consume the
content.

Options:

  - `options` {Object}
    - `[port]` {Number} is the server port (default: 3000).
    - `[autoreload]` {Boolean} refreshes app on file system changes (default: true)
  - `[callback]` {Function} is triggered when server starts.
    - `e` {Error} is null unless there is an error.

Returns:

  {PhoneGap} for chaining.