index.html: add apple-* mobile web app tags (vuejs#178)

Author: williamboman

src/index.template.html

@@ -4,6 +4,9 @@
     <title>{{ title }}</title>
     <meta charset="utf-8">
     <meta name="mobile-web-app-capable" content="yes">
+    <meta name="apple-mobile-web-app-capable" content="yes">
+    <meta name="apple-mobile-web-app-status-bar-style" content="default">
+    <link rel="apple-touch-icon" sizes="120x120" href="/public/logo-120.png">
     <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no, minimal-ui">
     <link rel="shortcut icon" sizes="48x48" href="/public/logo-48.png">
     <meta name="theme-color" content="#f60">