{

"name": "Marta app",
"version": "0.41245",
"description": "Messaging from browser to main app",
"devtools_page": "devtools.html",
"permissions": ["activeTab", "http://127.0.0.1*/*", "storage", "contextMenus"],
"background": {
  "scripts": ["background.js"],
  "persistent": true
},
"content_scripts": [{
     "matches": ["<all_urls>"],
     "all_frames": true,
     "js":      ["content.js"]
 }],
"manifest_version": 2

}