Use NSWeekOfMonthCalendarUnit not NSWeekOfYearCalendarUnit so that selection shows in Jan 2012
Merge pull request #27 from percysnoodle/selection_fix

Use NSWeekOfMonthCalendarUnit not NSWeekOfYearCalendarUnit
Merge remote-tracking branch 'square/master'

* square/master:
  Use NSWeekOfMonthCalendarUnit not NSWeekOfYearCalendarUnit so that selection shows in Jan 2012