* editing docs

* more doc updates

* Cleanup theme, update backends for PlaidML, remove stale font

* Add PlaidML description and doc update that should have been added with PR 1888

* Add PlaidML description and doc update that should have been added with PR 1888

* Latest release doc updates

* Add PlaidML description and doc update for PR 1888
* Update glossary with tensor description and quantization def
* Refactor landpage with QuickStart guides
* Add better details about nGraph features and roadmap

* Placeholder detail for comparison section

* Add section link

* order sections alphabetically for now

* update compiler illustration

* Address feedback from doc review

* Update illustration wording

* Formatting and final edits

* keep tables consistent

* Clarify doc on bridge and compiler docs

* Clarify doc on bridge and compiler docs

* yay for more feedback and improvements

* edit with built doc

* Fix typo

* Another phase of PR review editing

* Final review comment resolved

* Update README with different sort of navigation options

* Remove unnecessary repetition

* Add links to announcement blogs for previous contributions to ONNX and PyTorch projects

* Better link

* Add syllabus for perf criterion

* Editing and readability on README and add page for performance-validated workloads

* Editing and readability on README and add page for performance-validated workloads

* Editing and readability on README and add page for performance-validated workloads

* Update README

* Update illustrations with detail pertinent to br

* Documenting diagram and updating about features faqs doc

* Latest Beta doc updates

* clarify wording on arch doc

* Update deprecated INSTALL.md file and CONTRIB.md

* Legacy framework support for neon removed; instead show how nGraph enables custom or customizable frameworks

* nGraph Compiler stack beta

* Add markdown version of some docs as requested

* update full ng stack diagram

* Make sure diagrams work after moving them to tld

* Update ABOUT tld info doc with PR review feedback