Display attribution in footer

[Stephen-Gates]

As a data reuser, I want to provide attribution, so that I comply with licence requirements

Optionally display an attribution link at the bottom of the table using best practices.

This should be able to generated from the datapackage.json

e.g.

<a href="resource.url">resource.name-or-title</a> 
by <a href="resource.sources.url">resource.sources.name</a> 
is licensed under <a href="resource.licenses.url">license.name</a>

You would need to cater for:

• resources can inherit metadata properties from a data-package
• arrays of values

[rufuspollock]

Ditto comment here to #45 - i think this is definitely something to do but it should be up to app that is using this library to add that in. for example, we may do this differently on https://datahub.io/ than others would do it.

Not absolutely certain though - so happy to have pushback 😄

[Stephen-Gates]

I guess I saw this feature as an easy way to help people comply with their licence obligations. As the display of attribution would be optional, the app using the library is able to address attribution in other ways.

In general, I'm regularly deliberating over just complying with Frictionless Data vs promoting good practices through software constraints. E.g. In other software, I won't let someone export a data package unless the data has been validated successfully against the schema. I.e. prevent people doing the "wrong thing" / make it easy to do the right thing.

I feel firmer about this issue than #45 (which can be closed or put on the backlog).