Stepsize chrome extension

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Stepsize chrome extension",
  "short_name": "Stepsize",
  "description": "​Save code snippets from any web page. Works great with the Stepsize.com app.",
  "version": "0.0.3",
  "permissions": [
    "activeTab",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "js/jquery-2.1.4.min.js",
      "js/background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "js/jquery-2.1.4.min.js",
        "js/tether.js",
        "js/drop.js",
        "js/content_script.js"
      ],
      "css": [
        "css/drop/drop-theme-arrows-bounce.css",
        "css/semantic/button.min.css",
        "css/semantic/input.min.css",
        "css/main/extension.css"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    "icon22.png"
  ],
  "browser_action": {
    "default_icon": "icon22.png"
  },
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "homepage_url": "http://www.stepsize.com"
}