I want to develope an AR Android app. Here when user points to a product (ina shopping mall), it's info will be augmented on the screen. I'm using Android studio for Android app. I'm using markers. What I want to do is to store markers and the data to be augmented on the web server and when user points its device, it will capture marker, go to the web server, retrieve corrosponding info from their and augment it on the screen. Please tell me the steps to set up this web server and some sample android app to get started.