Fix streaming example (#205)

* Fix streaming example

The example to use replicate.stream was wrongly checking the event type and was not producing any output.

* Update README.md

Co-authored-by: Mattt <mattt@me.com>

* Update README.md

Co-authored-by: Mattt <mattt@me.com>

* Update README.md

Removing the console.dir since it's no longer relevant

---------

Co-authored-by: Mattt <mattt@me.com>

README.md

@@ -222,10 +222,9 @@ const options = {
 };
 const output = [];
 
-for await (const event of replicate.stream(model, options)) {
-  console.debug({ event });
-  if (event && event === "output") {
-    output.push(event.data);
+for await (const { event, data } of replicate.stream(model, options)) {
+  if (event === "output") {
+    output.push(data);
   }
 }