This is the source code from the Pigeoncoin Web Wallet service. Licensed under MIT license, forked from https://github.com/traysi/pocketraven
To install, just copy these files into your web tree. The pages are served to the user as static HTML and Javascript files, and all code executes in their browser. There are a few things you may need to do on your server, such as setup a node for transactions to be broadcasted, along with some server side scripts for the AJAX calls for the same. Those are a simple steps but not described here.