Examine source code of Flambé

{
  "manifest_version": 2,
  "name": "Flambe",
  "version": "1.1.5resigned1",
  "author": "Stephen Roth",
  "description": "Adds a \"Clear Tabs and Data\" button in the toolbar allowing you to close your tabs and clear your browser history in one click.",
  "homepage_url": "https://github.com/designbystephen/flambe",
  "applications": {
    "gecko": {
      "id": "flambe@designbystephen.com"
    }
  },
  "developer": {
    "name": "Stephen Roth",
    "url": "https://github.com/designbystephen"
  },
  "icons": {
    "48": "icon-512.png",
    "128": "icon-512.png",
    "256": "icon-512.png",
    "512": "icon-512.png"
  },
  "permissions": [
    "tabs",
    "browsingData"
  ],
  "browser_action": {
    "default_icon": "icon-512.png",
    "default_title": "Flambé",
    "default_popup": "flambe.html"
  }
}