Examine source code of Number Sequence Generator

{
  "manifest_version": 2,
  "name": "Number Sequence Generator",
  "version": "1.0",
  "description": "Number Sequences Generator utility, we have three different types of sequences: the Fibonacci Series, the Prime Number Series, and the Even Odd Number Series.",
  "permissions": [],
  "browser_action": {
    "default_popup": "game.html",
    "default_icon": {
      "128": "images/seque-logo.png"
    }
  },
  "icons": {
    "128": "images/seque-logo.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2cbae9f3-ba29-40ff-8b75-ebb6b57405a6}"
    }
  }
}