Examine source code of dePaywall

{
  "manifest_version": 2,
  "name": "dePaywall",
  "version": "1.1",
  "description": "Removes paywall from websites with one click.",
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_icon": "icons/border-48.png",
    "default_title": "dePaywall"
  },
  "icons": {
    "48": "icons/border-48.png",
    "96": "icons/border-96.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3b8f13a4-480b-4f02-b3ff-b0b8d1b49820}"
    }
  }
}