Examine source code of BikBik Reader

{
  "manifest_version": 2,
  "name": "Send To BikBik Reader",
  "version": "1.1",
  "description": "Sends selected text and page title to the BikBik Reader.",
  "icons": {
    "48": "icons/icon48.png",
    "96": "icons/icon96.png"
  },
  "permissions": [
    "contextMenus",
    "activeTab",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "web_accessible_resources": [
    "submit.html"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{a2b6f6dc-c2ff-444e-813d-3bdbb32d3a19}"
    }
  }
}