update itinerary factory
update specs for #put in itineraries_controller_spec
update itineraries_controller_spec tests for #update
update itineraries_controller #update action
update views, add edit link to itinerary
update itineraries :index
update itinerary factory with association => trip
udpate #delete specs for itineraries_controller
update #destroy action in itineraries_controller
Merge pull request #20 from Edchen001/fix_itineraries_controller_spec_xiran

Fix itineraries controller spec xiran