description and image og changes

web/app/index.html

@@ -9,7 +9,6 @@
   <meta name="keywords" content="huegasm,hue,philips,lights,ambience,music player,disco,party,sync,synchronize">
   <meta name="author" content="Egor Philippov">
   <meta name="viewport" content="width=device-width, initial-scale=1">
-  <meta property="og:image" content="http://www.huegasm.com/android-chrome-512x512.png" /> 
 
   <script type="application/ld+json">
     {
@@ -25,7 +24,8 @@
   <meta property="og:type" content="website" />
   <meta property="og:site_name" content="Huegasm" />
   <meta property="og:url" content="http://www.huegasm.com/" />
-  <meta property="og:image" content="/mstile-144x144.png" />
+  <meta property="og:description" content="Huegasm is a free web application for managing and synchronizing your Philips Hue lights with the beat of your music." />
+  <meta property="og:image" content="http://www.huegasm.com/feature-graphic.png" /> 
 
   <link type="text/plain" rel="author" href="http://www.huegasm.com/humans.txt" /> {{content-for 'head'}}
 

web/ember-cli-build.js

@@ -6,8 +6,17 @@ const Funnel = require('broccoli-funnel');
 
 module.exports = function(defaults) {
   let app = new EmberApp(defaults, {
-    fingerprint:{
-      exclude: ['logo.png', 'android-chrome-192x192.png', 'android-chrome-512x512.png', 'apple-touch-icon.png', 'favicon-16x16.png', 'favicon-32x32.png', 'mstile-150x150.png']
+    fingerprint: {
+      exclude: [
+        'logo.png',
+        'android-chrome-192x192.png',
+        'android-chrome-512x512.png',
+        'apple-touch-icon.png',
+        'favicon-16x16.png',
+        'favicon-32x32.png',
+        'mstile-150x150.png',
+        'feature-graphic.png'
+      ]
     }
   });
   let extraAssets = new Funnel('bower_components/bootstrap-sass/assets/fonts/bootstrap/', {
@@ -18,7 +27,7 @@ module.exports = function(defaults) {
 
   app.import('vendor/dancer.js');
   app.import('vendor/cie-rgb-converter.js');
-  
+
   app.import('bower_components/bootstrap-sass/assets/javascripts/bootstrap/tooltip.js');
   app.import('bower_components/intro.js/intro.js');
   app.import('bower_components/intro.js/introjs.css');