Examine source code of NextChange

{
  "manifest_version": 2,
  "name": "__MSG_NextChangeName__",
  "version": "1.0.1resigned1",
  "description": "__MSG_NextChangeDescription__",
  "homepage_url": "https://github.com/Silbad/NextChange",
  "default_locale": "en",
  "icons": {
    "48": "icons/logo-48.png",
    "96": "icons/logo@2x.png"
  },
  "permissions": [
    "storage"
  ],
  "developer": {
    "name": "Silbad",
    "url": "https://github.com/Silbad/NextChange"
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": "icons/logo@2x.png",
    "default_title": "NextChange",
    "default_popup": "app/popup.htm"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{fcdb2813-3400-4493-8cae-725adc52295f}"
    }
  }
}