Examine source code of MeanSomething

{
  "manifest_version": 2,
  "name": "MeanSomething",
  "version": "1.1resigned1",
  "description": "Find the meaning of any word",
  "icons": {
    "48": "page-48.png",
    "96": "page-96.png"
  },
  "permissions": [
    "tabs"
  ],
  "browser_action": {
    "default_icon": {
      "19": "icon-19.png",
      "38": "icon-38.png"
    },
    "default_title": "Meaning",
    "default_popup": "page.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9ef59f67-f766-421d-995b-8bc5fbc0db57}"
    }
  }
}