GitLab

+ blacken changed files
+ add client_create.py to readme
+ don't create admin client automatically

Creating a default client the user hasn't asked for could
create problems with unused clients building up big queues

The code was catching a FileNotFoundError and trying
to create the empty file but wasn't creating the
data directory before trying to save into it.

Rather than starting with 0 clients it now creates
a default "admin" client so that when you start the
app you always have something.

We need to think about how to provide these credentials
back to the user. Normally you save the response from
the post to /client. You can just read the file.

The admin client is set to receive all messages.
It may be better to set it to receive nothing so that
if the default client is not implemented the queues don't
fill up.

- done
  - client and token model
  - client and token api endpoints
  - send api endpoint
- todo
  - notify api endpoint
  - receive api endpoint

Use client creds to issue a bearer token
Authenticate subsequent endpoints with authorization header