Add note about sdsnewlen(0, ...) to readme #137
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It's convenient that
sdsnewlenaccepts0as a first argument, giving us a way to create an empty buffer of a given length. It would be nice to document this in the readme.I don't know how the wording should be, but it felt lazy to not make a PR for such a small change. Feel free to close this PR and use whatever wording you like ;-)