Add dynamic tray icon change feature.

[FavyTeam]

Hello, Thank you for your great package.

I have some question. How to change tray icon dynamically?

[FavyTeam]

I add some feature on your package.

function setTrayIcon(path){
  tray.setImage(path);
}

and then output setTrayIcon function like below.

module.exports = { setOptions, setTray, setWindow, setWindowSize, setTrayIcon };

I hope you guys add setTrayIcon function in next release. Thanks!

[FavyTeam]

Also some getTray() function is also useful but your package don't have it.

function getTray(){
  return tray;
}

I hope you guys publish those functions in next version. Thanks!

[sfatihk]

Hi @FavyTeam Thanks for your contributions. Seems nice. I thinking to add these features in the next release.

[FavyTeam]

Great! @sfatihk