give this a better description

muan · dgraham · web-flow · commit f549de775e3d · 2019-11-27T15:13:55.000-05:00
Co-Authored-By: David Graham &lt;dgraham@github.com&gt;
diff --git a/README.md b/README.md
@@ -1,6 +1,6 @@
 # &lt;filter-input&gt; element
 
-Custom element used to create a filter input.
+Display elements in a subtree that match filter input text.
 
 ## Installation
 
