title: Create a real chat application between 2 clients or more
body: <p>I have a web application that I have created with angularJS/Symfony2 and a mobile app with(ionic) I want to create a real chat application between this 2 clients.I thought to use nodeJS and websockets??I can have many clients conncted from their mobile
  I have read many articles about firebase for angularJS and redis,but I don't know from where I will start
  have you please any idea how can I do that
  thanks a lot</p>