Consider whether to move content from the readme to either the Extension Explorer or the standard documentation

[duncandewhurst]

From open-contracting/extension-explorer#47

In addition to #37, we should consider whether to move the other content.

Once done, we might need to update the content in the Extension Explorer that refers to this template.

[jpmckinney]

More detail from the linked issue:

Decide whether to move content from the extension template to either the explorer or the standard documentation. This content might be split into multiple pages.

If moved, we can replace the extension template readme with sample headings and expand on what makes good documentation.

I think the last point might be a good motivation to move the content, as most third-party readmes are low quality.

[duncandewhurst]

I agree that it makes sense to move everything but Getting started to the extension explorer documentation.

I've prepared a draft update to the publisher guidance to do that.

@jpmckinney do you want to review the draft before I update the HTML templates in open-contracting/extension-explorer#84? I've saved a comparison so that you can see what changed.