docs: add sponsor to readme (#52)

README.md

@@ -11,8 +11,15 @@
   </p>
 </div>
 
-<!-- REMOVE THIS IF YOU DON'T HAVE A DEMO -->
+## Recall.ai - Meeting Transcription API
-<!-- TIP: You can alternatively directly upload a video up to 100MB by dropping it in while editing the README on GitHub. This displays a video player directly on GitHub instead of making it so that you have to click an image/link -->
+
+Meetingnotes runs locally, capturing two streams: system & mic.
+
+If you’re looking for a transcription API for meetings, consider checking out [Recall.ai](
+https://www.recall.ai?utm_source=github&utm_medium=sponsorship&utm_campaign=owengretzinger+meetingnotes), an API that works with Zoom, Google Meet, Microsoft Teams, and more. Recall.ai diarizes by pulling the speaker data and separate audio streams from the meeting platforms, which means 100% accurate speaker diarization with actual speaker names.
+
+## Demo
+
 https://github.com/user-attachments/assets/cadd4504-e9d9-4ccd-874d-41d8a84f4c9d
 
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