Currency Converter

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Currency Converter",
  "description": "This extension allows you to convert currencies on the page. Highlight any number on the page and press 'e' to see the conversion.",
  "version": "0.0.0.6",
  "background": {
    "scripts": [
      "externals/jquery-3.1.0.min.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "externals/jquery-3.1.0.min.js",
        "content-script.js"
      ]
    }
  ],
  "browser_action": {
    "default_icon": "images/icon128off.png",
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "web_accessible_resources": [
    "css/main.css"
  ],
  "permissions": [
    "tabs"
  ]
}