Examine source code of Feed Schedule Reminder

{
  "manifest_version": 2,
  "name": "Feed Schedule Reminder",
  "version": "1.0",
  "description": "Feed Schedule Reminder. This utility helps remind users about their livestock feeding schedules, with the ability to create and manage reminders for each animal type.",
  "permissions": [],
  "browser_action": {
    "default_popup": "game.html",
    "default_icon": {
      "128": "images/feeds-logo.png"
    }
  },
  "icons": {
    "128": "images/feeds-logo.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6d2d4594-b8e8-412d-93e3-5ce5cb93b01d}"
    }
  }
}