Added description of datasets to /data/README.md

Author: IChowdhury01

data/README.md

@@ -1 +1,7 @@
-Placeholder. Add training/testing data here.
+## Datasets
+
+This folder contains datasets for training and testing a model for NLP tasks.
+
+- **classify_adr** datasets: Trains a model to classify a sentence as one of two categories:
+  - (1) Outlines terms for an ADR contract.
+  - (0) Not relevant to an ADR contract, or not containing specific contract term info.