Update README.md

[e0d]

Adding DEPR warning.

Description

LEARNER-XXXX

Add a description of your changes here.

Notes

• Example: Use example.sandbox.edx.org to test against
• Example: This PR will not address x,y, and z, because of a, b, and c.
• Example: Feature is behind a flag
• Example: Why I didn't add any tests

Testing

• i18n
• RTL
• safecommit shows 0 violations
• Unit, integration, acceptance tests as appropriate
• Analytics
• Performance
• Database migrations are backwards-compatible

[openedx-webhooks]

Thanks for the pull request, @e0d! Please note that it may take us up to several weeks or months to complete a review and merge your PR.

Feel free to add as much of the following information to the ticket as you can:

• supporting documentation
• Open edX discussion forum threads
• timeline information ("this must be merged by XX date", and why that is)
• partner information ("this is a course on edx.org")
• any other information that can help Product understand the context for the PR

All technical communication about the code itself will be done via the GitHub pull request interface. As a reminder, our process documentation is here.

Please let us know once your PR is ready for our review and all tests are green.

[openedx-webhooks]

@e0d 🎉 Your pull request was merged! Please take a moment to answer a two question survey so we can improve your experience in the future.