Provide read access to filesystem over WiFi menu

[jywarren]

Could we use the built-in console in the pi camera software? But perhaps just nginx or something would let us browse folders via HTML.

[jywarren]

If we do this via some program which allows uploading, then even better!

[jywarren]

I think the images are stored in a folder like http://pi.local/cam/... so if nginx or whatever is able to show directories listings for these, that'd be perfect.