Adding A Template To My Web Application

Hello, I have created a web application using yii framework. Now i want to add a template into my application. And i have downloaded a theme "simple-blue" form http://http://yii2.themefactory.net/theme/10/simple-blue#.UnH6I3UW2Kl. Wats the next step to add this template into my app? could somebody please tell me? It will be good if anybody explain it step by step.