DOC: README update

[ZviBaratz]

Organized a bit, removed some older references, added a bunch of badges.
If and when approved, I will copy the contents to info.py.

PREVIEW

[codecov]

Codecov Report

Base: 92.16% // Head: 92.16% // No change to project coverage 👍

Coverage data is based on head (6d1fd30) compared to base (fc49243).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1195   +/-   ##
=======================================
  Coverage   92.16%   92.16%           
=======================================
  Files          97       97           
  Lines       12332    12332           
  Branches     2534     2534           
=======================================
  Hits        11366    11366           
  Misses        645      645           
  Partials      321      321           

Impacted Files	Coverage Δ
nibabel/info.py	100.00% <ø> (ø)

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[effigies]

Thanks, Zvi! I made a batch of suggestions, but this is overall a tremendous improvement.

As always, feel free to argue back if I have been insufficiently persuasive...

[ZviBaratz]

I'm glad you approve, thank you for all the fixes and suggestions.
Looking at it now, I feel like the "Packaging" section should be removed. Will suggest a fix tomorrow.

[effigies]

LGTM. Two small comments.

[ZviBaratz]

@effigies re-requested one last review to make sure copying to long_description was done correctly.

Also, @matthew-brett, is this OK with you?

[effigies]

Some of this doesn't look great in the docs. I'll push a suggestion.

[effigies]

Updated:

[ZviBaratz]

Thank you. Not sure whether we should wait any longer before merging this or not 🤷🏼‍♂️

[effigies]

We're good to go if you're happy with my changes.