Examine source code of MarkPUSH

{
  "manifest_version": 2,
  "name": "MarkPUSH",
  "description": "Browser extension to push Articles on git repositories in a readable markdown format.",
  "version": "0.0.5",
  "browser_action": {
    "default_icon": "assets/icon32.png",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "build/background.js"
    ]
  },
  "icons": {
    "16": "assets/icon16.png",
    "48": "assets/icon48.png",
    "128": "assets/icon128.png",
    "256": "assets/icon256.png"
  },
  "permissions": [
    "https://*/*",
    "activeTab"
  ]
}