-Migrated project to Xcode 5
-Added .gitignore for Xcode > 4 files settings
-Migrated project to ARC (using Xcode refactor)
-Updated Configure.xib to new InterfaceBuilder (just open=>saved !)
Added "Random start" option in configuration
In configuration a duration of 0 seconds means infinite.
Added a descriptive label in ConfigureSheet (not sure about his style!)