Update readme to show read preference in the mongo config.

SamBartrum · Jul 29, 2017 · 11e7ed9 · 11e7ed9
1 parent ae4c94e
commit 11e7ed9
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/README.md b/README.md
@@ -97,7 +97,8 @@ var source = mongodb({
   // "wc": 1,
   // "fsync": false,
   // "bulk": false,
-  // "collection_filters": "{}"
+  // "collection_filters": "{}",
+  // "read_preference": "Primary"
 })
 
 var sink = elasticsearch({