Sample project to show how easy it is to add unit and UI tests

In response to [Christopher Burke's answer](http://qr.ae/RCI2cL) to the question 'What is the difference between a programmer, a good programmer, and a great programmer?' we have built this technic…

[Objective-C] Students will build a simple Journal app to practice MVC separation, protocols, master-detail interfaces, table views, and persistence.

A reverse polish notation calculator that demonstrates auto layout, stacks, target-actions on UIButtons