Update README.md

Author: olegkrivtsov

README.md

@@ -11,7 +11,7 @@ For description of each sample website and for detailed installation instruction
 
  * [Pure PHP](purephp/README.md) - demonstrates how to create a 3-page website without any framework
  * [Hello World Sample](helloworld/README.md) - shows how to write a simple, but functional website with Zend Framework 3, including the documentation and file download pages
- * [Form Demo Sample](formdemo/README.md) - here you can see how to use web forms for getting data from your site's users
+ * [Form Demo Sample](formdemo/README.md) - here you can see how to use web forms for getting data from your site's users and how to upload files to your server
  * [Blog Sample](blog/README.md) - shows how to implement a simple blog website
  * [User Demo Sample](userdemo/README.md) - shows how to use authentication (log in)
  * [Role Demo Sample](roledemo/README.md) - shows how to use RBAC (roles and permissions) for authorization