Added logos

This is a rudimentary logo. Maybe it can be updated in future.

Author: seshrs

dist/icon.png

@@ -5,6 +5,14 @@
   "description": "This extension allows users to easily navigate to Piazza posts and share questions with friends.",
   "version": "1.0",
 
+  "icons": {
+    "16": "icons/logo_16.png",
+    "32": "icons/logo_32.png",
+    "48": "icons/logo_48.png",
+    "128": "icons/logo_128.png",
+    "300": "icons/logo_300.png"
+  },
+
   "background": {
     "persistent": false,
     "scripts": ["background.js"]
@@ -20,7 +28,7 @@
   ],
 
   "page_action": {
-    "default_icon": "icon.png",
+    "default_icon": "icons/logo_300.png",
     "default_title": "Click to copy the post number"
   },