make web installable

index.html

@@ -5,6 +5,8 @@
 	<meta name="author" content="Xaloc">
 	<meta name="viewport" content="width=device-width, initial-scale=1"/>
 	<link rel="stylesheet" href="style.css">
+	<link rel="manifest" href="manifest.json">
+	<link rel="apple-touch-icon" href="img/icon.png"/>
 	<title>Currency Converter</title>
 </head>
 
@@ -53,5 +55,12 @@
 </div>
 </div>
 <script src='script.js'></script>
+<script>
+	if('serviceWorker' in navigator){
+		navigator.serviceWorker.register('/service-worker.js');
+	} else {
+		console.log("Service worker is not supported");
+	}
+</script>
 </body>
 </html>