Update README.md

README.md

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 # DART-WRF
 
 This package runs an Ensemble Data Assimilation system with the software packages DART and WRF. 
 
 [Please find the DART-WRF documentation and tutorials here.](https://dart-wrf.readthedocs.io/en/latest/)
 
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 #### References
 This workflow was created following the [DART-WRF Tutorial](https://docs.dart.ucar.edu/en/latest/models/wrf/tutorial/README.html).
 Read the DART documentation: [docs.dart.ucar.edu](https://docs.dart.ucar.edu).