Repo Meets Community Baseline Requirements

[JakeQuilty]

• [x] remove old docs links
• [ ] add supported versions for DAP and Conjur OSS
• [x] remove “draft” language
• [x] check against the cyberark/conjur-template README and CONTRIBUTING to make sure this repo meets our baseline requirements
  • link to CONTRIBUTING in README? etc
  • does not need a certification level yet
• [x] does the license have an up-to-date copyright?
• [x] does the repo have bug / issue templates?
• [x] Add Table of Contents to README
• [x] Update CHANGELOG from https://github.com/cyberark/conjur-api-dotnet/pull/48

[JakeQuilty]

I can't find the specific version of Conjur that was the switch from v4 to v5