NCL-6467: Document building and including/excluding tests

[dwalluck]

No description provided.

[codecov]

Codecov Report

Merging #288 (73c54e5) into master (9d04b4e) will increase coverage by 0.10%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #288      +/-   ##
============================================
+ Coverage     68.88%   68.98%   +0.10%     
  Complexity      393      393              
============================================
  Files            44       44              
  Lines          1880     1880              
  Branches        256      256              
============================================
+ Hits           1295     1297       +2     
+ Misses          477      475       -2     
  Partials        108      108              

Impacted Files	Coverage Δ	Complexity Δ
.../gm/manipulation/actions/ManifestUpdateAction.java	58.33% <0.00%> (+4.16%)	9.00% <0.00%> (ø%)

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