How to use a existing web project (developed on backbone.js and marionette module) to develop hybrid mobile app using ionic framework?

There is a existing web project and I have to build hybrid mobile app for that. The web project is build on backbone.js and marionette module. Now I need to figure out how to use files of existing web project into the ionic structure. My concern is how should I use structure of existing web project and use/merge it in Ionic structure.