message: Public Office hour info in README
  Summary:
  Pull Request resolved:
  Adding the office hour info to the main README file temporarily. So that it's more visible for folks visiting the github repo.
diff: @@ -8,6 +8,8 @@ source.
  Go to https://fbredex.com for full documentation.
  +![Redex Public Office Hour](https://fbredex.com/img/office-hour-oct-2022.png)
  +
  ## Contributions
  See [CONTRIBUTING.md](https://github.com/facebook/redex/blob/master/CONTRIBUTING.md) to understand how to contribute to this project.
  