add readme

Signed-off-by: Austin Abro <[email protected]>

hack/schema/README.md

@@ -0,0 +1,12 @@
+# schema generation
+
+This go project is designed to generate the JSON schema for the given API version of zarf.yaml files.
+
+## Usage
+Run the program with the desired API version as an argument:
+```bash
+go run main.go v1alpha1
+```
+The generated JSON schema will be printed to the console.
+
+Alternatively run `./create-zarf-schema.sh` which will generate all of the schemas, add yaml extension, and move the schema files to their proper place in the repo.