Updated readme

Author: Fabians

README.MD

@@ -1,6 +1,5 @@
 # Printful Magento 2 Plugin
 
-## How to install
+## How to install using FTP
 
-Put these files under <magento 2>/app/code/Printful/Integration so that the registration.php file can be found
-at <magento2>/app/code/Printful/Integration/registration.php
+Find installation instructions here: https://www.printful.com/dashboard/connect/magento