07: Fix missing JSON extension

If your server doesn't have the JSON extension installed, you can download the Services_JSON package from the Pear repository to enable it naively. You can download the package here:

http://pear.php.net/package/Services_JSON/download (Tested with version 1.0.3)

Once downloaded, extract 'JSON.php' from it and place it into the PutIO/Engines/JSON/ folder, and you're good to go. The script will take care of the rest.