Merge pull request #107 from buildkite-plugins/bm/compat_table

chore: update table title

Author: pzeballos

README.md

@@ -211,6 +211,17 @@ steps:
 
 The job UUID or name to download all artifacts from. Note that you can override it for specific artifacts when using the verbose format of the `download` element.
 
+## Compatibility
+
+| Elastic Stack | Agent Stack K8s | Hosted (Mac) | Hosted (Linux) | Notes |
+| :-----------: | :-------------: | :----: | :----: |:---- |
+| ✅ | ✅ | ✅ | ✅ | n/a |
+
+- ✅ Fully supported (all combinations of attributes have been tested to pass)
+- ⚠️ Partially supported (some combinations cause errors/issues)
+- ❌ Not supported
+
+
 ## Developing
 
 To run testing, shellchecks and plugin linting use use `bk run` with the [Buildkite CLI](https://github.com/buildkite/cli).