Examine source code of Bugfrog.io

{
  "name": "BugFrog",
  "version": "1.0",
  "description": "Bugfrog.io - Visual Bug Tracking",
  "background": {
    "scripts": ["js/background.js"]
  },

  "applications": {
    "gecko": {
      "id": "help@bugfrog.io"
    }
  },

  "icons": {
    "128": "icons/bugfrog_128.png"
  },

  "content_scripts": [
    {
      "matches": ["https://bugfrog-staging.herokuapp.com/bugs/new", "https://app.bugfrog.io/bugs/new"],
      // "matches": ["https://developer.mozilla.org/*", "http://localhost:8888/extensions/firefox_test.html/*"],
      "js": ["js/content-script.js"]
    }
  ],

  "permissions": [
    "activeTab", "storage", "tabs", "<all_urls>"
  ],
  
  "browser_action": {
  },
  "manifest_version": 2
}