update travis ruby to 2.1.3
update travis ruby to 2.1.3
dahal/backbone-on-rails,bhritchie/backbone-on-rails,meleyal/backbone-on-rails,shredder-rull/backbone-on-rails,meleyal/backbone-on-rails,bhritchie/backbone-on-rails,dahal/backbone-on-rails,shredder-rull/backbone-on-rails,bhritchie/backbone-on-rails,meleyal/backbone-on-rails,dahal/backbone-on-rails,shredder-rull/backbone-on-rails