I am trying to make my own iOS applications by using Xcode 7 and iOS 9.0. I have successfully been able to install the app on my own iPod by following Xcode 7 develop for iOS without developer account however when I run the application I get this error:

I had a quick look in the Settings app but cannot find a way to allow this application that I made. How would I 'trust' this application running iOS 9?