Docs need updating on how to configure it

[igorsantos07]

There's quite some time already that we don't do sensors: on YAML anymore. Nowadays my configuration.yaml is like this Template example.

Thus, I tried the following, but it errored stating the integration does not support YAML setup:

populartimes:
  sensor:
    - name: the market
      address: the address

It also complained that "Setup failed for custom integration 'populartimes': No setup or config entry setup function defined".

The current example also doesn't help to understand how to set up multiple places - although I discovered one could just make sensor: a list.