Add explicit --api or --view=json option

[sergiivorobei]

Currently when the app is generated with --no-view flag, public folder with nested folders is created. I propose to have additional option for creating APIs, to eliminate the need to remove these folders later. What are your thoughts regarding this?

[jilvin]

#198

[oviecodes]

That's a good idea @kennyx46 removing the folders because they are not needed. Just returning res.json().