Update app.js

@@ -86,8 +86,17 @@ async function handleEvent(event) {
   .then((stream) => {
     stream.on('data', (chunk) => {
       console.log(chunk);
-      var file=fs.createReadStream(chunk);
-      console.log(file);
+      fs.writeFileSync('./photo/image.png', chunk, function (err) {
+        if (err) {
+            console.log('에러발생');
+            console.dir(err);
+            return;
+        }
+       });
+    var file=fs.readFileSync('./photo/image.png','utf8',function (err, data) {
+        //파일 다 읽었을 대 호출 됨
+    });
+    console.log(file);    
       var cheerio = require('cheerio');
       
       var uriBase = 'https://koreacentral.api.cognitive.microsoft.com/vision/v2.1/ocr';