Update README

README.md

@@ -6,6 +6,10 @@ This repository holds data needed for analyses published in
 
 Code that uses these data to perform analyses and generate figures for the publication is stored in a sister repository on GitHub: https://github.com/CWRUChielLab/Gill-Chiel-eNeuro-2020-code
 
+## Description
+
+This dataset (total size: ~97 MB) contains extracellular nerve and muscle recordings of the feeding system of the marine mollusc *Aplysia californica*, obtained from intact freely behaving animals, with accompanying measurements of swallowing force and synchronized video of behavior. Animals were fed both uniform strips of seaweed without imposed load and uniform, unbreakable strips of seaweed anchored to a force transducer.
+
 ## Recommended Method for Viewing the Data
 
 To download and view the data using [**neurotic**](https://neurotic.readthedocs.io):