Issue #865 Add 'Getting Started' section to `README` (#872)
Issue #865 Add 'Getting Started' section to `README` (#872)

* Update Readme.md

Updated Readme.md to include a Getting Started section using information from the documentation.

* Update Readme.md

Adjusted some headings to be H3 to appear as sub-headings in the Getting Started section to provide better reading flow.

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