登录成功后如何“推送”到Home视图控制器

I am using storyboard in ios9. i have two screens. one is login screen and another one is homeviewcontroller. If login success i have to navigate homeviewcontroller. This is my requirement. jam using json parser and protocol is NSURLSession for login page. if login is success then navigate to homeviewcontroller. so i am writing some code. Login is success. After a successful login they did not navigate to homeviewcontroller. I am new to storyboard. Anybody help me. Thanks in advance.I am using storyboard in ios9. i have two scree