Is it possible to make the example on the `README.md` more obvious?

[fmv1992]

This is a newbie question.

I can't figure out how to get example.erl and example_worker.erl to work.

I got:

Pid1 = example:start(),
Specs = example:init([]),

But what next? I'm able to connect to my epgsql database using vanilla epgsql.

It would be lovely if you could point out until:

example:squery("pool1", "SELECT 1;").
% Or is it 'pool1' (atom).

Thanks in advance!

[fmv1992]

I was able to figure out. I added the following to example.erl:

main() ->
    % See if the database is working with plain `epgsql':
    {ok, C} = epgsql:connect(#{
        host => "localhost",
        username => "u",
        password => "p",
        database => "d",
        timeout => 4000
    }),
    {ok, _Z, __Z} = epgsql:squery(C, "SELECT 'epgsql...';"),
    % Start to trigger `application:start(?MODULE).' This will allow `get_env'
    % to not return `undefined'.
    Pid1 = example:start(),
    % Start the supervisor. This will also call `init'.
    Pid2 = example:start([], []),
    io_lib:format("~p", [example:squery(pool1, "SELECT 'POOLBOY!' as x;")]).

And I got the result of my query in the end.