HelloWorld documentation contains incorrect / outdated commands

[amegahed]

In the HelloWorld documentation, there are a few places where the commands cited appear to be outdated. The commands appear to be missing a required namespace parameter.

https://github.com/scailfin/rob-webapi-flask/blob/master/docs/demo-setup.rst

1. Adding Users

The documentation reads: "To run the demo you need to register at least one user." followed by:

flowserv register -u alice -p abc123

I believe the actual command should be:

flowserv users register -u alice -p abc123

2. Installing Demo

The documentation reads: "The next step is to install the code for the demo workflows." followed by:

flowserv install helloworld

I believe this should be:

flowserv app install helloworld