Use NSWeekOfMonthCalendarUnit not NSWeekOfYearCalendarUnit so that selection shows in Jan 2012
iOS 7 doesn’t call -layoutSubviews when a cell is created like iOS 6 did. Find a better place to create the cell’s subviews.
Merge pull request #30 from square/puls/ios7

iOS 7 doesn’t call -layoutSubviews when a cell is created like iOS 6 did...
Merge pull request #27 from percysnoodle/selection_fix

Use NSWeekOfMonthCalendarUnit not NSWeekOfYearCalendarUnit
Merge branch 'square-master'
fixed: date gets selected accidentally when scrolling