Formats a date range by intelligently inserting a dash between the two dates.
$.fullCalendar.formatRange( moment1, moment2, formatString [, separator, isRTL ] ) -> String
moment2 must be Moment objects.
formatString is a date formatting string written as if it were for a single date, but FullCalendar will intelligently use it to format both dates with a dash in between.
var moment1 = moment('2013-09-02'); var moment2 = moment('2013-09-09'); $.fullCalendar.formatRange(moment1, moment2, 'MMMM D YYYY'); => "Sep 2 - 9 2013"