Readme update, Use const instead of let

Author: crycode-de

README.md

@@ -54,6 +54,7 @@ corresponding environment variable will be ignored.
 | `--token` | `TOKEN` | An optional token which must be provided on upload. | Nothing |
 | `--path-regexp` | `PATH_REGEXP` | A regular expression to verify a given upload path. This should be set with care, because it may allow write access to outside the upload directory. | `/^[a-zA-Z0-9-_/]*$/` |
 | `--disable-auto-port` | `DISABLE_AUTO_PORT` | Disable automatic port increase if the port is nor available. | Not set. |
+| `--enable-folder-creation` | `ENABLE_FOLDER_CREATION` | Enable automatic folder creation when uploading file to non-existent folder. | Not set. |
 | `--help`, `-h` | | Show some help text | |
 
 Examples:
@@ -62,7 +63,7 @@ PORT=9000 UPLOAD_DIR=~/uploads/ UPLOAD_TMP_DIR=/tmp/ TOKEN=my-super-secret-token
 
 http-server-upload --port=9000 --upload-dir="c:\users\peter\Path With Whitespaces\"
 
-PORT=9000 http-server-upload --disable-auto-port ./
+PORT=9000 http-server-upload --disable-auto-port --enable-folder-creation ./
 ```
 
 

http-server-upload.js

@@ -63,7 +63,7 @@ Argument | Environmen variable
 --disable-auto-port | DISABLE_AUTO_PORT
   Disable automatic port increase if the port is nor available. [Not set]
 --enable-folder-creation | ENABLE_FOLDER_CREATION
-  Enable automatic folder creation when uploading file to inexisting folder. [Not set]
+  Enable automatic folder creation when uploading file to non-existent folder. [Not set]
 --help or -h
   Show this help text.
 
@@ -193,7 +193,7 @@ server.on('request', (req, res) => {
         fields.path = '';
       }
 
-      let targetPath = path.join(uploadDir, fields.path);
+      const targetPath = path.join(uploadDir, fields.path);
       fs.stat(targetPath, (err) => {
         if (err) {
           if (enableFolderCreation) {