diff --git a/init.js b/init.js
index d2b2555..24ff137 100644
--- a/init.js
+++ b/init.js
@@ -4,20 +4,23 @@ import fs from 'fs'
 import {s3} from 'aws'
 import {unzip} from 'zip'
 
+import createExtractor from './create-extractor'
+
 const AWS_KEY = 'abcdefg0123456789'
 s3.setKey(AWS_KEY)
 
 const BUCKET = 'my-s3-bucket'
 
 function extract(filename, buffer){
-  if(path.extname(filename) === 'zip'){
+  if(path.extname(filename) === '.zip'){
     return unzip(buffer)
   }else{
     return bytes
   }
 }
 
+const extractor = createExtractor(extract)
+
 function upload (filename, targetName) {
-  const bytes = extract(filenane, fs.readFileSync(filename))
-  s3.putObject(BUCKET, filename, targetName)
+  fs.createReadStream(filename).pipe(extractor).pipe(s3.createWriteStream(BUCKET, targetName))
 }