Readme feature list is out of date

[michael-hawker]

Describe the bug

Realized that we haven't been checking for adding new features to our readme in the toolkit repository. We should make sure these are current or refer to the doc repo which will be more up-to-date.

Options:

1. Track and update Readme after Release
2. Link to existing Markdown based Table-of-contents in Doc repo
3. Duplicate feature list in doc repo

Looks like item 2) is preferred from our stream vote.