Examine source code of Reddit Comment Navigator

{
  "manifest_version": 2,
  "name": "Reddit Comment Navigator",
  "description": "Easily navigate between top level comments on a Reddit post.",
  "version": "0.1",
  "icons": {
    "64": "rcn-icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.reddit.com/*/comments/*"
      ],
      "js": [
        "rcn.js"
      ]
    }
  ]
}