adds new minimal-ui attribute

Browser UI now autohides on page load if user is on iOS 7.1

new attribute reference:
w3c-webmob/installable-webapps#35

<adambrodzinski@gmail.com>

index.html

@@ -5,7 +5,7 @@
 <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
 <title>HackerWeb</title>
 <meta name="apple-mobile-web-app-title" content="HackerWeb">
-<meta name="viewport" content="width=device-width, initial-scale=1.0">
+<meta name="viewport" content="width=device-width, initial-scale=1.0, minimal-ui">
 <link rel="shortcut icon" href="icons/favicon.ico">
 <link rel="apple-touch-icon-precomposed" sizes="152x152" href="icons/touch-icon-152.png">
 <link rel="apple-touch-icon-precomposed" sizes="144x144" href="icons/touch-icon-144.png">
@@ -180,4 +180,4 @@ <h1>About</h1>
 })(document, navigator.userAgent);
 </script>
 </body>
-</html>
+</html>