Examine source code of Emojibar

{
  "manifest_version": 2,
  "name": "Emojibar",
  "short_name": "Emojibar",
  "description": "Quickly copy an emoji to the clipboard right from your browser",
  "version": "1.0.1resigned1",
  "applications": {
    "gecko": {
      "id": "emojibar@mozilla.kewis.ch"
    }
  },
  "icons": {
    "16": "images/addon16.png",
    "32": "images/addon32.png",
    "256": "images/addon256.png"
  },
  "omnibox": {
    "keyword": "emoji"
  },
  "background": {
    "scripts": [
      "background/suffixtree.js",
      "background/background.js"
    ]
  }
}