Update app.js

@@ -85,19 +85,11 @@ async function handleEvent(event) {
       client.getMessageContent(event.message.id)
   .then((stream) => {
     stream.on('data', (chunk) => {
-      console.log(chunk);
-      fs.writeFileSync('./photo/image.png', chunk, function (err) {
-        if (err) {
-            console.log('에러발생');
-            console.dir(err);
-            return;
-        }
-       });
-    var file=fs.readFileSync('./photo/image.png','application/json',function (err, data) {
-        //파일 다 읽었을 대 호출 됨
+      client.replyMessage(event.replyToken,chunk).then(resolve).catch(reject);
+
     });
-    console.log(file);    
-      var cheerio = require('cheerio');
+      
+    var cheerio = require('cheerio');
       
       var uriBase = 'https://koreacentral.api.cognitive.microsoft.com/vision/v2.1/ocr';
        var options = {