Document finishLayout helper and provide tutorial on how to render static content?

[kirbysayshi]

#85 (comment)

And

#35 (comment)

[jlVidal]

Any idea when it's going to be published? After several research and tries I didn't figure out that.
How we can render content correctly (without "block"problems) without using express?

[mlotfyf]

I'm having this issue when trying to use Vash with KOA2 although I don't have any problem when using Express, any idea how to use it with KOA?

[hooliy]

koa2 中也遇到了同样的问题！