Examine source code of BMI Score Calculator

{
  "name": "__MSG_name__",
  "short_name": "__MSG_shortName__",
  "version": "1.0.1.1resigned1",
  "default_locale": "en",
  "description": "__MSG_description__",
  "manifest_version": 2,
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "http://bmi.pekapps.cz/"
  ],
  "browser_action": {
    "default_title": "BMI Score Calculator",
    "default_icon": {
      "19": "icons/icon19.png",
      "38": "icons/icon38.png"
    },
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "@BMIScoreCalc"
    }
  }
}