Update README.md

svenheden · svenheden · commit 9b910c105d86 · 2015-11-24T12:38:06.000-05:00
diff --git a/README.md b/README.md
@@ -26,7 +26,7 @@ This is adapted from [event-stream](https://github.com/dominictarr/event-stream)
 
 `merged.add`
 
-A method to dynamically add more sources to the stream.
+A method to dynamically add more sources to the stream. The argument supplied to `add` can be either a source or an array of sources.
 
 `merged.isEmpty`
 
