For export, options should be config OR model file, not both

[snisarg]

Steps to reproduce

Based on #283

While exporting, we are reading the exporter config from the model itself. In that case, we don't really need the config file. The export options should be either specify the config file OR give a model.

Observed Results

Even when a model is specified, the process is waiting for the config from stdin. Logically, the model file should suffice.

Expected Results

The command line should take either a model file OR a config, not need both.

The documentation may also need updating accordingly.

[deepali-c]

I think this is resolved by the PR - #433.
But looks like document is yet to be updated. Shall I do that?

[Titousensei]

@snisarg is this still relevant?

[snisarg]

@deepali-c we'll be happy to receive a push request with the updated documentation. :)

[snisarg]

We can close this after the documentation is updated.

[deepali-c]

I am not able to submit a PR at the moment could you please add a change for this too.