Merge pull request #130 from telia-oss/document-exploded-metadata

Add documentation for individual metadata files

Author: Kristian

README.md

@@ -74,6 +74,10 @@ requested version and the metadata emitted by `get` are available to your tasks
 - `.git/resource/version.json`
 - `.git/resource/metadata.json`
 
+The information in `metadata.json` is also available as individual files in the `.git/resource` directory, e.g. the `base_sha`
+is available as `.git/resource/base_sha`. For a complete list of available (individual) metadata files, please check the code 
+[here](https://github.com/telia-oss/github-pr-resource/blob/master/in.go#L66).
+
 When specifying `skip_download` the pull request volume mounted to subsequent tasks will be empty, which is a problem
 when you set e.g. the pending status before running the actual tests. The workaround for this is to use an alias for
 the `put` (see https://github.com/telia-oss/github-pr-resource/issues/32 for more details).