I am using Xcode 5 in a newly created app and when I just create it I go for the run button e click on it, then the project gets built but it does not show in the iOS Simula
1st option
if you want to set your custom storyboard instead of a default view controller.
Change this attribute from info.plist file
Onboarding would be your storyboard name
to open this right-click on info.plist file and open as a source code
2nd option
1- Click on your project
2- Select your project from the target section
3- Move to Deployment interface section
4- Change your storyboard section from Main Interface field
Please remember set your storyboard initial view controller