install and usage updates

[evhend]

Changes per comments from TA and reviewers

[codecov]

Codecov Report

Merging #62 into master will not change coverage by %.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #62   +/-   ##
=======================================
  Coverage   92.47%   92.47%           
=======================================
  Files           7        7           
  Lines         279      279           
=======================================
  Hits          258      258           
  Misses         21       21           

Flag	Coverage Δ
#unittests	92.47% <ø> (ø)

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[evhend]

in response to peer feedback found here
and TA feedback found here