Update 'README.md'

add harvard citation

README.md

@@ -93,8 +93,7 @@ This project is licensed under the MIT License - see the [LICENSE.md](LICENSE) f
 
 If you use the HintCO, please cite our paper.
 
-HintCO – Hint-Based Configuration of Co-Simulations.
-Cláudio Gomes, Bentley James Oakes, Mehrdad Moradi, Alejandro Torres Gámiz, Juan Carlos Mendo, Stefan Dutré, Joachim Denil, Hans Vangheluwe. SIMULTECH 2019.
+Gomes, C.; Oakes, B.; Moradi, M.; Gámiz, A.; Mendo, J.; Dutré, S.; Denil, J. and Vangheluwe, H. (2019). HintCO – Hint-based Configuration of Co-simulations.In Proceedings of the 9th International Conference on Simulation and Modeling Methodologies, Technologies and Applications - Volume 1: SIMULTECH, ISBN 978-989-758-381-0, pages 57-68. DOI: 10.5220/0007830000570068.
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 @conference{simultech19,
 author={Cláudio Gomes. and Bentley James Oakes. and Mehrdad Moradi. and Alejandro Torres Gámiz. and Juan Carlos Mendo. and Stefan Dutré. and Joachim Denil. and Hans Vangheluwe.},