Update icon paths

manifest.webapp

@@ -3,13 +3,13 @@
   "name": "high-fidelity",
   "description": "Listen to your favourite podcasts on your HTML5-powered device or browser.",
   "icons": {
-    "32": "/images/icon-32.png",
-    "60": "/images/icon-60.png",
-    "64": "/images/icon-64.png",
-    "90": "/images/icon-90.png",
-    "120": "/images/icon-120.png",
-    "128": "/images/icon-128.png",
-    "256": "/images/icon-256.png"
+    "32": "/high-fidelity/images/icon-32.png",
+    "60": "/high-fidelity/images/icon-60.png",
+    "64": "/high-fidelity/images/icon-64.png",
+    "90": "/high-fidelity/images/icon-90.png",
+    "120": "/high-fidelity/images/icon-120.png",
+    "128": "/high-fidelity/images/icon-128.png",
+    "256": "/high-fidelity/images/icon-256.png"
   },
   "developer": {
     "name": "Mozilla",