cite katherine, as she was the true genesis of CLIP + diffusion (and now latent diffusion)

README.md

@@ -18,6 +18,13 @@ It may also explore an extension of using latent diffusion in the decoder
 }
 ```
 
+```bibtex
+@misc{crowson2022,
+    author  = {Katherine Crowson},
+    url     = {https://twitter.com/rivershavewings}
+}
+```
+
 ```bibtex
 @misc{rombach2021highresolution,
     title   = {High-Resolution Image Synthesis with Latent Diffusion Models},