[documentation] tendrl-api full example is missing

[mbukatov]

The README file states that:

Running behind apache makes the API available at http://<hostname>:80/api/.

It would be nice if this note would also include a full example of some query of the api, eg.:

$ curl http://<hostname>/api/1.0/Flows

Reasoning

This would be useful for quick check that the tendl-api is up and running.

Moreover at the current state, there is no full example of tendrl-api query documented anywhere and it's not straightforward to connect the dots based on the other documents either.

Documentation of Tenrl API refers to the api calls like this:

GET /cluster/:cluster_id/volume/actions

And Tenrl API overview like this:

curl https://api.example.com/1.0

So to get a full url for the api together, I would need to combine information from 3 files (which belongs to 2 components).

[mbukatov]

this is still valid, and I would need to include this in my resurrection of tendrl docs ...