Add netlify badge

Author: chartgerink

README.md

@@ -1,5 +1,7 @@
 # Open.libscie.org
 
+[![Netlify Status](https://api.netlify.com/api/v1/badges/dc4f4863-3f29-4761-a398-277e6b44376c/deploy-status)](https://app.netlify.com/sites/open-libscie-org/deploys)
+
 This is an [Observable Framework](https://observablehq.com/framework) project. To start the local preview server, run:
 
 ```