Add asset README

Author: Nick Pentreath

README.md

@@ -55,6 +55,7 @@ Related Repositories
 | ------------- | --------  | -------- |
 | This repository | [Apache 2.0](https://www.apache.org/licenses/LICENSE-2.0) | [LICENSE](LICENSE) |
 | Model Weights | [Apache 2.0](https://www.apache.org/licenses/LICENSE-2.0) | [LICENSE](LICENSE) |
+| Test Assets | No restriction | [Asset README](assets/README.md) |
 
 ## Prerequisites
 

assets/README.md

@@ -0,0 +1,9 @@
+# Asset Details
+
+## Model files
+
+Model files are provided as part of this repository in the [`models`](models) subfolder under an [Apache 2 License](https://github.com/IBM/MAX-Weather-Forecaster/blob/master/LICENSE).
+
+## Test Data
+
+The test data is a subset of training data from [JFK Airport Weather Data, NOAA](https://www.ncdc.noaa.gov/cdo-web/datasets/LCD/stations/WBAN:94789/detail) and may be used without restriction.