I spent a couple of hours trying to figure out  a way to do a random pick from the enums, but it seems that is not possible on Objective-C.
This is why I had to make an array of int values from the Enum values, and then I could use the random generator to pick one from that array. 
Anyway, this will be used only on this Demo, I don't see any use of "Get a random icon from FontAwesome".