Update README.md

BernardZijlstra · web-flow · commit d6def07ad757 · 2020-04-07T11:02:00.000+02:00
diff --git a/README.md b/README.md
@@ -1,4 +1,5 @@
 # facetwp-wp-cli
 Run indexing of FacetWP via WP-CLI
 
+`wp help facet index`
 `wp facet index [--post-type=post_type]`
