Examine source code of GitHub Profile Search

{
  "manifest_version": 2,
  "name": "GitHub Profile Search",
  "version": "1.0",
  "description": "In this application, there is a search bar where users can enter the username that they want to view. After entering the username, an API call is been triggered, and the details of the inputted user are returned to the user along with the repositories.",
  "permissions": [],
  "browser_action": {
    "default_popup": "game.html",
    "default_icon": {
      "128": "images/git-logo.png"
    }
  },
  "icons": {
    "128": "images/git-logo.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0b6e90ce-b745-452f-83c9-e9aa0beb4d7f}"
    }
  }
}