Examine source code of Patchwork

{
  "name": "Patchwork",
  "version": "1.0.5",
  "description": "Collect and organize bits of information from the web into into beautiful, thematic collections.",
  "icons": {
    "16": "icon-16.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "manifest_version": 2,
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon-16.png",
      "24": "icon-24.png",
      "32": "icon-32.png"
    },
    "default_title": "Patchwork"
  },
  "permissions": [
    "contextMenus",
    "activeTab",
    "webRequest",
    "webRequestBlocking",
    "*://*.patchworkapp.com/*"
  ]
}