What to do about the integration list in the README

[KodrAus]

In #548 (comment) @JohnTitor brought up the broader question of what to do with the list of integrations listed in the README. They're currently presented as "the most popular" implementations out there. Right now the list isn't really curated that way; if there's a new crate that integrates with log then we add it to the list.

The function the list serves is giving users a kick-start to get actual data out of log, which on its own simply pipes your events into oblivion.

Alternative strategies to achieving that function are:

• Linking a Cargo keyword for log or logger as mentioned in the linked comment.
• Updating the wording of the README to not suggest the list is curated in any way besides listing libraries that integrate with log. It's up to end-users to evaluate the suitability of these libraries for their own needs.

[NobodyXu]

Would it be a good idea to mention tracing_log in the list, for it enables forwarding tracing to log or visa versa?

[KodrAus]

@NobodyXu Definitely 👍 It's a bit surprising we don't mention tracing at all in there.

[Thomasdezeeuw]

Maybe we should just change the wording? For example from:

There are many available implementations to choose from, here are some of the most popular ones:

To:

There are many available implementations to choose from, here are some options:

[KodrAus]

@Thomasdezeeuw that sounds good to me.

[Thomasdezeeuw]

@KodrAus any further changes we want to make?