Changes

=Tools=

*[https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Getting_started_with_web-ext web-ext] is a command line tool designed to speed up various parts of the WebExtension development process, making development faster and easier.

*[https://github.com/mi-g/weh WebExtensions Helper] speeds up browser add-ons development by providing facilities for WebExtensions-based (Firefox, Chrome, Opera and Edge) extensions

*[https://github.com/yeoman/generator-chrome-extension Chrome Extension generator] creates everything you need to get started with extension development. You can choose Browser UI(Browser,Page Action, Omnibox) type and select permissions you need.