Examine source code of CanvasQuizVim

{
  "browser_specific_settings": {
    "gecko": {
      "id": "canvasQuizVim@canvasQuizVim.com"
    }
  },
  "manifest_version": 2,
  "name": "CanvasQuizVim",
  "version": "3.3",
  "icons": {
    "36": "./kabaddi.png"
  },
  "run_at": "document_idle",
  "content_scripts": [
    {
      "matches": [
        "https://*.instructure.com/courses/*/quizzes/*/take"
      ],
      "js": [
        "canvasQuizVim.js"
      ]
    }
  ]
}