Add instructions for testing and deployment to readme

README.md

@@ -1 +1,17 @@
-To deploy, run `mvn deploy -P release`
+## Running tests
+You need the following environment variables in order to run all tests:
+```
+TMDB_API_KEY
+TMDB_API_READ_TOKEN
+TMDB_API_ACCESS_TOKEN
+TMDB_USERNAME
+TMDB_PASSWORD
+TMDB_ACCOUNT
+```
+
+Most are easy to get via TMDB but `TMDB_API_ACCESS_TOKEN` is tricky. See https://github.com/UniversalMediaServer/UniversalMediaServer/pull/4037#issuecomment-2081531952 for instructions.
+
+## Deployment
+Run `mvn deploy -P release`.
+
+On macOS you might need to symlink `gpg2` to `gpg` as described at https://stackoverflow.com/a/69920288/2049714