Finishing both the instructions and folder structure guide

[sean-afshar]

Finalizing this new draft of the 2 guides so that we can package and push this thing out

[codecov]

Codecov Report

Merging #7 (fc42a75) into main (b2d124d) will not change coverage.
The diff coverage is 87.50%.

❗ Current head fc42a75 differs from pull request most recent head da254cf. Consider uploading reports for the commit da254cf to get more accurate results

@@           Coverage Diff           @@
##             main       #7   +/-   ##
=======================================
  Coverage   81.19%   81.19%           
=======================================
  Files           3        3           
  Lines         218      218           
=======================================
  Hits          177      177           
  Misses         41       41           

Impacted Files	Coverage Δ
sleap_anipose/triangulation.py	82.60% <ø> (ø)
sleap_anipose/calibration.py	80.27% <85.71%> (ø)
sleap_anipose/__init__.py	100.00% <100.00%> (ø)

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[talmo]

Minor fixes