Update Docs for mainnet

[gamarin2]

All docs ready for mainnet.

Still waiting for recommended gas-prices to merge.

• Targeted PR against correct branch (see CONTRIBUTING.md)

• Linked to github-issue with discussion and accepted design OR link to spec that describes this work.

• Wrote tests

• Updated relevant documentation (docs/)

• Added entries in PENDING.md with issue #

• rereviewed Files changed in the github PR explorer

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For Admin Use:

• Added appropriate labels to PR (ex. wip, ready-for-review, docs)
• Reviewers Assigned
• Squashed all commits, uses message "Merge pull request #XYZ: [title]" (coding standards)

[codecov]

Codecov Report

Merging #3838 into develop will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop    #3838   +/-   ##
========================================
  Coverage    60.92%   60.92%           
========================================
  Files          192      192           
  Lines        14323    14323           
========================================
  Hits          8727     8727           
  Misses        5027     5027           
  Partials       569      569

[jackzampolin]

We should have a corresponding PR for master to ensure that the docs builds are pushed.

[gamarin2]

Will make one as soon as this PR is R4M

[alexanderbez]

Left some feedback on #3855

[codecov-io]

Codecov Report

Merging #3838 into develop will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop    #3838   +/-   ##
========================================
  Coverage    60.92%   60.92%           
========================================
  Files          192      192           
  Lines        14323    14323           
========================================
  Hits          8727     8727           
  Misses        5027     5027           
  Partials       569      569