Not working..

[Francis D]

Something is not right...

Nothing happens on the 3rd step,
where you do
php artisan vendor:publish

[Doug Sisk]

Make sure if you have config caching on to clear it after adding the service provider into the config.

Also try running this as another package's provider might be preventing the vendor:publish command from running properly:
php artisan vendor:publish --provider="DougSisk\CountryState\CountryStateServiceProvider"

[Francis D]

I see.. I'll try that..