Add bibtex citation

Closes #6 (closed)

README.md

@@ -250,3 +250,18 @@ pre-commit install
 The linting workflow will now run on modified files before committing, and may fix issues for you.
 
 If you want to run the full workflow on all the files: `pre-commit run -a`.
+
+## Citation
+
+If you use this work, please cite us using this Bibtex citation:
+
+```
+@misc{nerval2021,
+	title        = {Nerval: a python library for named-entity recognition evaluation on noisy texts},
+	author       = {Miret, Blanche and Kermorvant, Christopher},
+	year         = 2021,
+	journal      = {GitLab repository},
+	publisher    = {GitLab},
+	howpublished = {\url{https://gitlab.com/teklia/ner/nerval}}
+}
+```
\ No newline at end of file