Add multiple starting URLs

[rafiramadhana]

Resolves https://github.com/philippta/flyscrape/issues/8

Add multiple starting URLs by adding Module.URLs.

[rafiramadhana]

@philippta sry I haven't done any changes related to documentation (e.g. config and example)

would u mind to LMK which files that should get updated? tks

[philippta]

This is great, thanks!

Examples If you like you can add an example under examples/multiple_starting_urls.js. For that, take the basic hackernews.js example, remove everthing from the config and add these two urls:

• https://news.ycombinator.com/show
• https://news.ycombinator.com/ask

Documentation Please document the urls option in between these two: https://github.com/philippta/flyscrape/blob/190056ee8d6a4eca61d92a79cc25aad645e69d4a/README.md?plain=1#L121-L122

[rafiramadhana]

If you like you can add an example under examples/multiple_starting_urls.js.

Please document the urls option in between these two:

@philippta updated

[philippta]

Nice, thanks!