Document replica-server-id command line option

[druud62]

Document replica-server-id command line option
https://github.com/druud

[shlomi-noach]

Thank you for the documentation update!

Did you mean to include e75811f in this PR? It seems like a mistaken push.

[druud62]

Indeed, I'll revert away the script/showdups from my fork.
I used it to check the amount of duplicate code source files, and there are plenty.
But I agree that such a tool doesn't belong in this repo.

BTW, I checked for duplicates, because there are different date-formats in the logging,
so I expected to find several log-modules. (Examples: "2017/10/26" vs. "2017-10-26")

[shlomi-noach]

There are different date formats in the logs because I'm using 3rd party libraries.

[shlomi-noach]

I like using the double-dashes convention. This was discussed in #127.

I don't care that the golang convention uses a single preceeding dash. The unix convention uses two and that's independent of the underlying programming language.

[druud62]

I also prefer the double-dash convention. afe3ef3 now reverted.

[shlomi-noach]

You may have reverted too much? There's nothing now in this PR

[druud62]

All I see is that you merged, 9166671.
I probably still have to 'PR' my revert, 287ac78.
Will check that.

[rafsanbhuiyan]

Could you please explain to me the purpose of this code? And how can I contribute to the cause? I would love to help.
Thank you for your time.