Add description to card metadata

README.md

@@ -1,6 +1,6 @@
 ---
 title: MAUVE
-emoji: 🤗 
+emoji: 🤗
 colorFrom: blue
 colorTo: red
 sdk: gradio
@@ -8,10 +8,25 @@ sdk_version: 3.0.2
 app_file: app.py
 pinned: false
 tags:
-- evaluate
-- metric
----
+  - evaluate
+  - metric
+description: >-
+  MAUVE is a library built on PyTorch and HuggingFace Transformers to measure
+  the gap between neural text and human text with the eponymous MAUVE measure.
+
+
+  MAUVE summarizes both Type I and Type II errors measured softly using
+  Kullback–Leibler (KL) divergences.
+
 
+  For details, see the MAUVE paper: https://arxiv.org/abs/2102.01454 (Neurips,
+  2021).
+
+
+  This metrics is a wrapper around the official implementation of MAUVE:
+
+  https://github.com/krishnap25/mauve
+---
 # Metric Card for MAUVE
 
 ## Metric description