{
  "manifest_version": 2,
  "name": "The Old Reader Bookmark",
  "version": "0.3",
  "description": "__MSG_addonDescription__",
  "homepage_url": "https://github.com/laedit/the-old-reader-bookmark/",
  "default_locale": "en",

  "icons": {
    "16": "icons/oldreadericon-16.png",
    "32": "icons/oldreadericon-32.png",
    "48": "icons/oldreadericon-48.png",
    "64": "icons/oldreadericon-67.png"
  },

  "applications": {
    "gecko": {
      "id": "jid1-sVBiH5VBQOq2TA@jetpack",
      "strict_min_version": "49.0"
    }
  },

  "permissions": [
    "activeTab",
    "<all_urls>"
  ],

  "browser_action": {
    "default_icon": {
    "16": "icons/oldreadericon-16.png",
    "32": "icons/oldreadericon-32.png",
    "48": "icons/oldreadericon-48.png",
    "64": "icons/oldreadericon-67.png"
    },
    "default_title": "The Old Reader - Bookmark",
    "browser_style": true
  },

  "background": {
    "scripts": ["background-script.js"]
  }

}
{
  "manifest_version": 2,
  "name": "The Old Reader Bookmark",
  "version": "0.3",
  "description": "__MSG_addonDescription__",
  "homepage_url": "https://github.com/laedit/the-old-reader-bookmark/",
  "default_locale": "en",

  "icons": {
    "16": "icons/oldreadericon-16.png",
    "32": "icons/oldreadericon-32.png",
    "48": "icons/oldreadericon-48.png",
    "64": "icons/oldreadericon-67.png"
  },

  "applications": {
    "gecko": {
      "id": "jid1-sVBiH5VBQOq2TA@jetpack",
      "strict_min_version": "49.0a"
    }
  },

  "permissions": [
    "activeTab",
    "<all_urls>"
  ],

  "browser_action": {
    "default_icon": {
    "16": "icons/oldreadericon-16.png",
    "32": "icons/oldreadericon-32.png",
    "48": "icons/oldreadericon-48.png",
    "64": "icons/oldreadericon-67.png"
    },
    "default_title": "The Old Reader - Bookmark",
    "browser_style": true
  },

  "background": {
    "scripts": ["background-script.js"]
  }

}
Update to debug in firefox developer edition
Update to debug in firefox developer edition
