Added install document and updated instructions

[mambelli]

Added an install document for operators and updated the index in github.io and the development instructions accordingly

[codecov]

Codecov Report

Merging #567 (3b4213c) into master (24ba527) will decrease coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #567      +/-   ##
==========================================
- Coverage   95.39%   95.36%   -0.04%     
==========================================
  Files          45       45              
  Lines        2716     2716              
  Branches      442      442              
==========================================
- Hits         2591     2590       -1     
  Misses         91       91              
- Partials       34       35       +1     

Flag	Coverage Δ
python-3.10	95.25% <ø> (-0.04%)	⬇️
python-3.6	95.07% <ø> (+0.03%)	⬆️

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Impacted Files	Coverage Δ
src/decisionengine/framework/dataspace/maintain.py	99.04% <0.00%> (-0.96%)	⬇️

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[jcpunk]

Did you want to add a link to our github pages to README.md?

[mambelli]

@jcpunk Good catch. added