Add instructions for full measure static caching on Herd

[stuartcusackie]

Since Laravel Herd is now the recommended way to install Statamic, I think it would be good to document how to set up full-measure static caching on Herd.

I like to test full measure static caching locally before deploying to Forge. Customising the Forge nginx.conf for static caching is fairly straightforward, but the Laravel Herd nginx.conf files are far more complicated - I don't know where to start.

Thanks.

[duncanmcclean]

It should just work.

Laravel Herd (and Valet) knows to look for a public/static directory in your project, and serve files from there, otherwise it'll hit your Statamic app. You don't need to touch any Nginx configs locally.

[stuartcusackie]

Your right! It does just work.

Maybe there could be a little note in the docs so that fools like me know that herd is full measure ready?