Examine source code of Platypush

{
  "name": "platypush",
  "description": "Web extension for interacting with Platypush instances via browser and creating custom browser actions",
  "version": "0.2.4",
  "manifest_version": 2,
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "64": "icons/icon-64.png",
    "128": "icons/icon-128.png",
    "256": "icons/icon-256.png"
  },
  "permissions": [
    "activeTab",
    "storage",
    "notifications",
    "clipboardRead",
    "clipboardWrite",
    "contextMenus",
    "<all_urls>"
  ],
  "browser_action": {
    "default_title": "platypush",
    "default_popup": "popup/popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options/options.html",
    "chrome_style": true
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "commands": {
    "user-command-0": {
      "suggested_key": {
        "default": "Ctrl+Alt+0"
      },
      "description": "User command 0"
    },
    "user-command-1": {
      "suggested_key": {
        "default": "Ctrl+Alt+1"
      },
      "description": "User command 1"
    },
    "user-command-2": {
      "suggested_key": {
        "default": "Ctrl+Alt+2"
      },
      "description": "User command 2"
    },
    "user-command-3": {
      "suggested_key": {
        "default": "Ctrl+Alt+3"
      },
      "description": "User command 3"
    },
    "user-command-4": {
      "suggested_key": {
        "default": "Ctrl+Alt+4"
      },
      "description": "User command 4"
    },
    "user-command-5": {
      "suggested_key": {
        "default": "Ctrl+Alt+5"
      },
      "description": "User command 5"
    },
    "user-command-6": {
      "suggested_key": {
        "default": "Ctrl+Alt+6"
      },
      "description": "User command 6"
    },
    "user-command-7": {
      "suggested_key": {
        "default": "Ctrl+Alt+7"
      },
      "description": "User command 7"
    },
    "user-command-8": {
      "suggested_key": {
        "default": "Ctrl+Alt+8"
      },
      "description": "User command 8"
    },
    "user-command-9": {
      "suggested_key": {
        "default": "Ctrl+Alt+9"
      },
      "description": "User command 9"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f43b87dd-d496-4440-be68-05fd33a14ea3}"
    }
  }
}