I don't 'like' you!

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "I don't 'like' you!",
  "description": "Removes ability to 'like' posts from specified users",
  "version": "1.4",
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html",
    "default_title": "Open me!"
  },
  "content_scripts": [
    {
      "matches": [
        "http://www.facebook.com/*",
        "https://www.facebook.com/*"
      ],
      "js": [
        "jquery-2.2.0.min.js",
        "contentScript.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "jquery.min.js"
  ],
  "permissions": [
    "activeTab",
    "https://ajax.googleapis.com/",
    "storage"
  ]
}