Update citation format

README.md

@@ -83,20 +83,14 @@ Please cite fmm in your publications if it helps your research:
 
 Bibtex file
 
- @article{doi:10.1080/13658816.2017.1400548,
- author = {Can Yang and Gyozo Gidofalvi},
- title = {Fast map matching, an algorithm integrating hidden Markov model with precomputation},
- journal = {International Journal of Geographical Information Science},
- volume = {32},
- number = {3},
- pages = {547-570},
- year = {2018},
- publisher = {Taylor & Francis},
- doi = {10.1080/13658816.2017.1400548},
- URL = {
-  https://doi.org/10.1080/13658816.2017.1400548
- },
- eprint = {
-  https://doi.org/10.1080/13658816.2017.1400548 
- }
- }
+```bibtex
+@article{Yang2018FastMM,
+ title={Fast map matching, an algorithm integrating hidden Markov model with precomputation},
+ author={Can Yang and Gyozo Gidofalvi},
+ journal={International Journal of Geographical Information Science},
+ year={2018},
+ volume={32},
+ number={3},
+ pages={547 - 570}
+}
+```