Examine source code of Ctrl-Cloud Plugin

{
  "manifest_version": 2,
  "name": "Ctrl-Cloud Plugin",
  "version": "1.1resigned1",
  "description": "This extension will allow access to a cross-device clipboard",
  "homepage_url": "http://mtam2.github.io/Ctrl-Cloud/",
  "icons": {
    "48": "icons/ctrl_cloud_logo_48.png",
    "96": "icons/ctrl_cloud_logo_96.png"
  },
  "applications": {
    "gecko": {
      "id": "mtamdev@gmail.com",
      "strict_min_version": "44.0"
    }
  },
  "permissions": [
    "activeTab",
    "clipboardRead",
    "clipboardWrite",
    "cookies",
    "https://ajax.googleapis.com/"
  ],
  "browser_action": {
    "default_icon": "icons/ctrl_cloud_logo_128.png",
    "default_popup": "popup/popup.html"
  }
}