Examine source code of Valencian Spellchecker

{
  "dictionaries": {
    "ca-valencia": "dictionaries/roa-ES-val.dic"
  },
  "version": "2.2.0.3resigned1",
  "browser_specific_settings": {
    "gecko": {
      "id": "roa-ES-val@dictionaries.addons.mozilla.org"
    }
  },
  "name": "Valencian Spellchecker",
  "manifest_version": 2
}