Examine source code of JSON-handle

{
  "manifest_version": 2,
  "name": "JSON-handle",
  "version": "1.4.21resigned1",
  "description": "It's a browser and editor for JSON document.You can get a beautiful view.",
  "author": "紫石",
  "homepage_url": "http://jsonhandle.sinaapp.com",
  "applications": {
    "gecko": {
      "id": "jsonhandle@gmail.com"
    }
  },
  "icons": {
    "48": "data/logo48.png",
    "96": "data/logo128.png",
    "128": "data/logo128.png"
  },
  "background": {
    "scripts": [
      "bg.js"
    ]
  },
  "browser_action": {
    "default_icon": "data/logo48.png"
  },
  "content_security_policy": "script-src 'self'"
}