Folder organisation for docs/tutorials

Spent an hour completely stumped on how to use the new Tilelayer in 1.1.1 because I was under the assumption there was no documentation for it. I knew what was in the /tutorials directory: specific game tutorials! Shooter, Fish, et cetera. Never even saw the "Featured Tutorials" folder until I was hit over the head with it.

It'd be nice to have it even-more-obviously organised (TGB is all about ease of use, after all); either /documentation/tutorials/Game Examples and /tutorials/Features, or put all that feature stuff into the References folder (which is generally where I'd expect to find it since it's for core stuff).