Merge pull request #3912 from plotly/nicolaskruchten-patch-2

funnelarea trace description

Author: nicolaskruchten

Diff for: src/traces/funnelarea/index.js

@@ -28,7 +28,10 @@ module.exports = {
 
     meta: {
         description: [
-            'TODO'
+            'Visualize stages in a process using area-encoded trapezoids. This trace can be used',
+            'to show data in a part-to-whole representation similar to a "pie" trace, wherein',
+            'each item appears in a single stage. See also the "funnel" trace type for a different',
+            'approach to visualizing funnel data.'
         ].join(' ')
     }
 };