Added an option to disable/enable registration.

README.md

@@ -21,6 +21,7 @@ my $STORAGE_ROOT = "/var/www/storage"; # must be writable by httpd user
 my $MAX_UPLOAD   = 1073741824;         # 1 GB
 my $SCRIPT_NAME  = $ENV{SCRIPT_NAME} || "/cgi-bin/cloudvista.cgi";
 my $COOKIE_DAYS  = 30;
+MY $REGISTER_EN  = "true";
 ```
 
 ## Requirements
@@ -45,10 +46,10 @@ my $COOKIE_DAYS  = 30;
 ## Usage
 
 Users can:
-- Register a new account with username and password
+- Register a new account with username and password if registration is enabled
 - Login to access their file storage
 - Upload files (up to 1GB each)
 - Download their files
 - Delete individual files
 - Change their password
-- Delete their account and all files
+- Delete their account and all files