SPA.md seems to be outdated, and contradicts app-shell.md

[JobLeonard]

We should also specify the ServiceWorker.navigateFallbackURL, which instructs the service worker to redirect any non-cached navigation request to the specified route.

https://github.com/NekR/offline-plugin/blob/master/docs/examples/SPA.md

Previously, to achieve the same effect, ServiceWorker.navigateFallbackURL and AppCache.FALLBACK option had to be used. ServiceWorker.navigateFallbackURL is now deprecated and shouldn't be used at all. Instead, appShell should be used.

https://github.com/NekR/offline-plugin/blob/master/docs/app-shell.md

I'm not entirely sure what the correct documentation would be, but given that the SPA one is older I assume it's the outdated one. Since it is the first and only linked example from the README.md, this can lead people astray.

[NekR]

Indeed! It's outdated and should be updated, thanks for pointing to it!

[NekR]

Would be great to have this for v5 release if navigateFallbackURL option is going to be removed.

[JobLeonard]

Yes it would!

But as much as I'd like to help out, I'm afraid I can't in practice, since the issue is about documentation for changes in the code and API that I don't know about because it's not consistently documented :P

I guess I can proofread though.