Update README.md

Add "How to cite"

README.md

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   [resting state analysis from OMEGA datasets](https://neuroimage.usc.edu/brainstorm/Tutorials/RestingOmega#BIDS_specifications)
   )
 
+## How to cite
+To credit BIDS-Matlab in your work, please cite the [Zenodo archive](https://zenodo.org/record/5910584), which points to a permanent record of all BIDS-Matlab versions (we encourage you to cite the specific version you used). Example citations (for bids-matlab 0.1.0):
+
+Gau, R., Flandin, G., Janke, A., Oostenveld, R., Madan, C., Niso, G., Szczepanik, M., Mutsaerts, H., Beliy, N., Norgaard, M., Pernet, C., & Phillips, C. bids-matlab (Version 0.1.0) Zenodo. doi: [10.5281/zenodo.5910585](https://doi.org/10.5281/zenodo.3363985)
+
+
 ## Contributors ✨
 
 Thanks goes to these wonderful people