A workspace to support
This XCODE workspace contain several small projects explaining some do hows and containing some classes to support development. This classes can eaisily be dragged and dropped inside the project and be used to support the development of any kind. This will be better if this includes name and copyright. But it's fine you choose not to.
Description: A simple project demonstrating how to set image on an related imageView to perticular button. This code chunk was actually written to provide support on this SO question: http://stackoverflow.com/questions/25701477/display-photos-in-different-uiimageviews/25702019#25702019
Code to create a dynamic grid of buttons. This grid adjust button size according to size of container view.