Yes of course, you can use our example as a basis for your app. Though I feel that if setting up a vanilla project with a game toolkit is so hard for new users, that is probably not a great game toolkit in general. That's not your fault, that's SFML's fault. Why stick with SFML? There are many others that don't involve such pain. I'm partial to libgdx, which is what the Spine editor is written in.