Examine source code of Roatta Waaayyyy!!!

{
  "manifest_version": 2,
  "name": "Roatta Waaayyyy!!!",
  "version": "1.0.0.17",
  "description": "Chess AddIn for Firefox",
  "icons": {
    "32": "icons/roatta_32_32.jpg"
  },
  "permissions": [
    "contextMenus"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7af910b8-6021-4392-9fe6-1e3f32ad3d64}"
    }
  }
}