Laravel 5 - how to show language in URL

I would like to create app with language in URL, like this:

 http://www.example.com/
 http://ift.tt/1i9vXfX
 http://ift.tt/1n7zTmo

In my app localization works but URL always is same. How to show URL with .../fr or .../en?

via Chebli Mohamed