Merge branch 'readme-edits' into 'main'

Updated readme

See merge request !20

README.md

@@ -12,13 +12,22 @@ For prior models, see the [U.S. Seismic Hazard Maps – Hawaii][3] data release.
 
 All NSHM Hawaii sources are assigned to the top-level `volcanic` tectonic setting.
 
+## Site Files
+
+The `map-hawaii.geojson` file defines the latitude-longitude range over which the USGS computes
+maps of seismic hazard from this model. The `sites-hawaii.geojson` and `sites-hawaii.csv` files
+contain the test sites at which the USGS performs more detailed comparisons between model editions.
+See the *nshmp-haz* user guide [site specification section][4] for more details on these files.
+
 ## Reference
 
 Petersen, M.D, Shumway, A.M., Powers, P.M., Moschetti, M.P., Llenos, A.L., Michael, A.J., Mueller,
 C.S., Frankel, A.D., Rezaeian, S., Rukstales, K.S., McNamara. D.E., Okubo, P.G., Zeng, Y., Jaiswal,
 K.S., Ahdi, S.K., Altekruse, J.M., and Shiro, B.R., 2021, 2021 U.S. National Seismic Hazard Model
-for the State of Hawaii, _Earthquake Spectra_, in press.
+for the State of Hawaii, _Earthquake Spectra_, DOI: [10.1177/87552930211052061][5].
 
 [1]: https://code.usgs.gov/ghsc/nshmp/nshmp-haz
 [2]: https://code.usgs.gov/ghsc/nshmp/nshmp-haz/-/blob/main/docs/README.md
 [3]: https://www.usgs.gov/natural-hazards/earthquake-hazards/science/us-seismic-hazard-maps-hawaii?qt-science_center_objects=0#qt-science_center_objects
+[4]: https://code.usgs.gov/ghsc/nshmp/nshmp-haz/-/blob/main/docs/pages/Site-Specification.md
+[5]: https://doi.org/10.1177/87552930211052061