run(execPath, args, options) {
    var arg = arguments;
    if (platform.indexOf('linux') === 0) arg[0] = path.dirname(arg[0]);
    pRun[platform].apply(this, arg);
  }
Runs the app from original app executable path.
@param {string} execPath
@param {array} args - Arguments passed to the app being ran.
@param {object} options - Optional. See `spawn` from nodejs docs.

Note: if this doesn't work, try `gui.Shell.openItem(execPath)` (see [node-webkit Shell](https://github.com/rogerwang/node-webkit/wiki/Shell)).