Merge pull request #171 from Spatiotemporal-Exposures-and-Toxicology/…

…readme-update-01

Update README.md

README.md

@@ -2,6 +2,7 @@
 [![codecov](https://codecov.io/gh/Spatiotemporal-Exposures-and-Toxicology/NRTAPmodel/graph/badge.svg?token=T6QZW69X55)](https://codecov.io/gh/Spatiotemporal-Exposures-and-Toxicology/NRTAPmodel)
 [![R-CMD-check](https://github.com/Spatiotemporal-Exposures-and-Toxicology/NRTAPmodel/actions/workflows/check-standard.yaml/badge.svg)](https://github.com/Spatiotemporal-Exposures-and-Toxicology/NRTAPmodel/actions/workflows/check-standard.yaml)
 [![lint](https://github.com/Spatiotemporal-Exposures-and-Toxicology/NRTAPmodel/actions/workflows/lint.yaml/badge.svg)](https://github.com/Spatiotemporal-Exposures-and-Toxicology/NRTAPmodel/actions/workflows/lint.yaml)
+[![Project Status: WIP – Initial development is in progress, but there has not yet been a stable, usable release suitable for the public.](https://www.repostatus.org/badges/latest/wip.svg)](https://www.repostatus.org/#wip)
 
 # Air Pollution Data for the Masses: An Open-Access, Tested, Updated PM<sub>2.5</sub> Hybrid Model 
  Group Project for the Spatiotemporal Exposures and Toxicology group with help from friends :smiley: :cowboy_hat_face: :earth_americas: