Update app.js

@@ -100,7 +100,7 @@ function handleEvent(event) {
           'Content-Type': 'application/octet-stream',
           'Ocp-Apim-Subscription-Key': subscriptionKey
         },
-        body: fs.readFileSync(event.message.image)
+        body: event.message.image
       };
       console.log("1");
       request.post(options, function (error, response, body) {