<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <title>AIS</title>
 <link rel="shortcut icon" type="image/png" href="favicon.png">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <link rel="stylesheet" href="style.css" />
 <link rel="stylesheet" href="https://unpkg.com/leaflet@1.0.3/dist/leaflet.css" />
</head>
<body onload="init()">
 <aside id="error">
  <noscript>Javascript is required to display the map</noscript>
 </aside>
 <main>
  <div id="map"></div>
  <span id="nships"></span>
 </main>
 <footer>
  <span>Website &amp; server &copy; 2017 Ivar Sørbø &amp; Torbjørn Birch Moltu</span>
 </footer>
 <script src="https://unpkg.com/leaflet@1.0.3/dist/leaflet.js"></script>
 <script src="script.js"></script>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <title>AIS</title>
 <link rel="shortcut icon" type="image/png" href="favicon.png">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <link rel="stylesheet" href="style.css" />
 <link rel="stylesheet" href="https://unpkg.com/leaflet@1.0.3/dist/leaflet.css" />
</head>
<body onload="init()">
 <aside id="error">
  <noscript>Javascript is required to display the map</noscript>
 </aside>
 <main>
  <div id="map"></div>
  <span id="nships"></span>
 </main>
 <footer>
  <span>Website &amp; server &copy; 2017 Ivar Sørbø &amp; Torbjørn Birch Moltu</span>
  <br/>
  <span>Source code available at <a href="https://github.com/tormol/AIS">github.com/tormol/AIS/</a></span>
 </footer>
 <script src="https://unpkg.com/leaflet@1.0.3/dist/leaflet.js"></script>
 <script src="script.js"></script>
</body>
</html>

Add link to Github in footer
Add link to Github in footer
