Run a command using sudo, prompting the user with an OS dialog if necessary. Useful for background applications or native Electron apps that need sudo.
Currently supports native OS dialog prompt on Mac OS X (patches welcome for Linux) and uses process.title as the name of the app requesting permission.
sudo-prompt should behave just like the `sudo` command in the shell. If your command does not work with the `sudo` command in the shell (perhaps because it uses `>` redirection to a restricted file), then it will not work with sudo-prompt. However, it is still possible to use sudo-prompt to get a privileged shell, [see this issue for more information](https://github.com/jorangreef/sudo/issues/1).