Add installation instructions for tools.deps.

[seabass-labrax]

This pull request adds instructions for installing clj-cbor as a dependency with tools.deps; it uses a different format to Leiningen.

[codecov-commenter]

Codecov Report

Merging #18 (5f8ea51) into main (2ba843a) will not change coverage.
The diff coverage is n/a.

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##             main      #18   +/-   ##
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  Coverage   99.66%   99.66%           
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  Files          13       13           
  Lines         890      890           
  Branches        3        3           
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  Hits          887      887           
  Partials        3        3           

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[greglook]

I like addition of the tools.deps instructions, but I'm loathe to lose the automatic release version from the banner here. Maybe clojars has a tools.deps-style banner we could show too? If not, I'd prefer the tools.deps section to use a "RELEASE" placeholder or instruct the reader to use the version shown here.

[seabass-labrax]

Thanks for taking a look at this pull request! I agree; the Clojars banner is pretty neat. Clojars doesn't have a tools.deps banner, but I think it would be a fun project to add that feature to Clojars at some point... I'll look into that :)

How about I amend the commit by moving the Clojars banner up to the start of the README instead of removing it? That way it'd be underneath the other badges and the installation instructions would be as they are in my patch.