Update docs to correct path to "demo" folder

[rswarthout]

The docs located at ( https://docs.payid.org/remote-deployment/ ) refer to a demo folder and a script within. The folder does not appear anywhere within the repo.

Detailed Description

Missing "demo" folder that docs refer to. At one point it seems it was renamed to "example" but that too has been removed in commit ( 34fef51 ).

Context

I am trying to step through the docs to set up a server on AWS and the folder is missing.

[dino-rodriguez]

Thank you for bringing this to our attention! @rswarthout

We are updating the docs to reflect more appropriate instructions.

For now, I would recommend that you run npm run devEnvUp in place of those commands.

And change the port range in the docker-compose.yml file in the root directory from:

8080:8080 to 80:8080