We'll create fresh WordPress site with DSubscribers installed. You have 20 minutes to test the plugin after that site we'll be deleted.
DSubscribers is a simple subscribers system that collects E-mails from your website.
This plugin uses WordPress Plugin Template as boilerplate
https://github.com/hlashbrooke/WordPress-Plugin-Template
This plugin uses jQuery Validation Plugin
http://jqueryvalidation.org/