Examine source code of Diff Search

{
  "name": "Pull Request Search",
  "description": "A search tool that works for Github diffs and commits",
  "version": "1.0",
  "manifest_version": 2,
  "content_scripts": [
    {
      "matches": [
        "*://github.com/*/*/pull/*",
        "*://github.com/*/*/commit/*"
      ],
      "js": [
        "scripts/content.js",
        "scripts/purify.min.js"
      ]
    }
  ],
  "permissions": [
    "<all_urls>",
    "activeTab"
  ],
  "browser_action": {
    "default_popup": "popup/popup.html",
    "default_title": "Search in Github"
  },
  "background": {
    "page": "background/background.html"
  },
  "icons": {
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+F",
        "mac": "Command+Shift+F"
      }
    }
  }
}