Update encrypted file handling

[auxesis]

Update the documentation on how to handle encrypted files.

[auxesis]

@equivalentideas I think this whole section of documentation is a bit of a mess.

by ignoring the encrypted files, how will people have the files to be decrypted? That's not clear in these instructions.

It won't work unless you have all the credentials in place, and the only credentials we ship are encrypted ones. There's no documentation about how to set up credentials from scratch when setting up a local dev environment.

Do you think we should move this bit up in the readme so people see it before they clone? Or is it really just for us? Maybe we should start a new section, 'Setting up to deploy to the production instance at https://morph.io'?

This section of documentation should help any user who wants to set up a public-facing copy of Morph, either for production use or testing.

Right now, the documentation only "helps" us.

It comes back to what I said above: we need to write documentation that covers:

• How to set up a production-like environment
• How to manage credentials

[auxesis]

@equivalentideas and to be clear: I think that new documentation should be handled in a separate PR.

[equivalentideas]

That all sounds very sensible to me @auxesis , I'll merge this.

[henare]

Relates to #948.