Q:

How to create a second version of current app?

I'm new to the iOS Development! I want to create an app for iOS devices. I know it's nice time to learning more about iOS Development with Swift. But I have a little problem with it. My problem line is version of app. Let's assume I have a fully completed app of version first. Assuming it's already been distributed by App Store. So, I want add a new features and improvements to my current app, from this point I'll need to build a second version of app. Let's say this version 1.1, successor of the 1.0.
Questions:
1 )  How to create a second version of app?
2 )  I'll need to rebuild everything from scratch?  
Thanks a lot!

A:

Usually in order to submit an update to your app, you just modify the code as you like, update the version and build number of the project and submit it just as you did when you uploaded the app for the first time.
As for your second question, just read this document by Apple and you'll be all set :) https://developer.apple.com/library/ios/documentation/Swift/Conceptual/BuildingCocoaApps/Migration.html 

