Add W3C app manifest and theme color to index.html

src/index.html

@@ -15,11 +15,23 @@
     <link rel="apple-touch-icon" sizes="120x120" href="img/icon-120-ios.png">
     <!-- iOS status bar black with white text -->
     <meta name="apple-mobile-web-app-status-bar-style" content="black">
+
     <!-- standard homescreen link -->
     <meta name="mobile-web-app-capable" content="yes">
-    <!-- standard icon (retina) -->
+    <!-- standard icons -->
+    <link rel="icon" sizes="36x36" href="img/icon-36-android.png">
+    <link rel="icon" sizes="48x48" href="img/icon-48-android.png">
+    <link rel="icon" sizes="72x72" href="img/icon-72-android.png">
+    <link rel="icon" sizes="96x96" href="img/icon-96-android.png">
+    <link rel="icon" sizes="144x144" href="img/icon-144-android.png">
+    <link rel="icon" sizes="192x192" href="img/icon-192-android.png">
     <link rel="icon" sizes="196x196" href="img/icon-196-universal.png">
 
+    <!-- theme color -->
+    <meta name="theme-color" content="#00c6ff">
+    <!-- standard web ap manifest -->
+    <link rel="manifest" href="webapp.json">
+
     <!-- Viewport and styles -->
     <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
     <link rel="stylesheet" media="all" href="css/all.min.css" type="text/css">

src/webapp.json

@@ -0,0 +1,37 @@
+{
+  "name": "Whiteout Mail",
+  "short_name": "Whiteout",
+  "start_url": "index.html",
+  "display": "standalone",
+  "icons": [{
+    "src": "img/icon-36-android.png",
+    "sizes": "36x36",
+    "type": "image/png",
+    "density": "0.75"
+  }, {
+    "src": "img/icon-48-android.png",
+    "sizes": "48x48",
+    "type": "image/png",
+    "density": "1.0"
+  }, {
+    "src": "img/icon-72-android.png",
+    "sizes": "72x72",
+    "type": "image/png",
+    "density": "1.5"
+  }, {
+    "src": "img/icon-96-android.png",
+    "sizes": "96x96",
+    "type": "image/png",
+    "density": "2.0"
+  }, {
+    "src": "img/icon-144-android.png",
+    "sizes": "144x144",
+    "type": "image/png",
+    "density": "3.0"
+  }, {
+    "src": "img/icon-192-android.png",
+    "sizes": "192x192",
+    "type": "image/png",
+    "density": "4.0"
+  }]
+}