redo implementations

[melvincarvalho]

remove for now

  <section>
    <h3>Implementations</h3>

    <h4>Client</h4>

    The first client implementation uses vouchers to interact with the lightning network.<br /><br />

    <a href="https://webvouchers.org/play/voucher.html">Client Demo</a>

    <h4>Server</h4>

    <a href="https://github.com/solidpayorg/webvouchers/blob/gh-pages/bin/lightning.js">Server Code</a>

  </section>