feat(engines): add optional url and document to render options

[PatrickJS]

• Add url and document as optional parameters for rendering
• Add optional parameters setup to the README

[Toxicable]

Same error we're getting here #808 (comment)

Maybe update docs to show you can optionally use those those now?
Also might ben nice to update Hapi to have the same API to try be consistant

[vikerman]

Yes - Can you update the other engines with similar options and update the README?

[vikerman]

Update README and add similar options to other engines.

[CaerusKaru]

@gdi2290 Are you still tending to this PR? If not, I can add the changes and push to this branch.

[PatrickJS]

@CaerusKaru you can take this PR over

[CaerusKaru]

@vikerman This is ready for review again. @MarkPieszak can you take a look as well?

Addressed all necessary changes

[MarkPieszak]

LGTM

[MarkPieszak]

LGTM, i'll test it out in the webpack & CLI dotnet apps when it lands as well to double check.

[sjogren]

Very nice! We are dependent on this feature in our current project. Does anyone know when this will be available on npm?

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