Bug description : event.rb : all_day?  calls time.parse( @start_time ) if @start_time is a Time object this causes an exception in time.parse.

resolution : Change to allow all_day? to cope with a time object instead of a string
Merge pull request #33 from jlovick/bugfix

minor update to event.rb to allow all_day? to process @start_time to contain a time object