first steps at getting started docs

[drmorr0]

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Description

Getting started docs

Testing done

n/a

Additional info

Partially resolves #96 -- we still need an FAQ page and a detailed discussion about how to get metrics out.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.67%. Comparing base (0d96e54) to head (4245007).

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #99      +/-   ##
==========================================
- Coverage   69.69%   69.67%   -0.02%     
==========================================
  Files          38       38              
  Lines        1917     1916       -1     
==========================================
- Hits         1336     1335       -1     
  Misses        581      581              

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