Updated README to add citation (#103)

* Update README.md - add placeholder citation

added a placeholder cite request to the AICI github repo, with bibtex example

* Update README.md

README.md

@@ -430,6 +430,25 @@ All of these can be easily extended.
 - the [example ANSI C grammar](controllers/aici_abi/grammars/c.y) is based on
   https://www.lysator.liu.se/c/ANSI-C-grammar-y.html by Jeff Lee (from 1985)
 
+# Citing this package
+
+If you find the AI Controller Interface and its ideas for defining a new layer in the LLM inference stack useful, please cite the package using the following reference: 
+
+* Michal Moskal, Madan Musuvathi, Emre Kıcıman. AI Controller Interface, (2024), GitHub repository. https://github.com/microsoft/aici
+
+Bibtex:
+
+```bibtex
+@misc{Moskal2024,
+  author = {Moskal, Michal and Musuvathi, Madan and {K\i c\i man}, Emre},
+  title = {{AI Controller Interface}},
+  year = {2024},
+  publisher = {{GitHub}},
+  journal = {{GitHub} repository},
+  howpublished = {\url{https://github.com/microsoft/aici/}}
+}
+```
+
 # Contributing
 
 This project welcomes contributions and suggestions. Most contributions require you to agree to a