Lightning Component Navigation with Fallback

gistfile1.js

({
    update: function(component, evt, helper) {
      var expense = component.get("v.expense");
        var updateEvent = $A.get("e.c:updateExpenseItem");
      updateEvent.setParams({ "expense": expense }).fire();
    },
    gotoRecord: function(component, evt, helper) {


		console.log("onclick");
		
		
		var sObjectEvent = $A.get("e.force:navigateToSObject");
		console.log(sObjectEvent===null);

		if (sObjectEvent){ //strategy: it's in SF1
			sObjectEvent.setParams({
				"recordId": component.get("v.expense.Id")
			});
			sObjectEvent.fire();
		} else { //fallback for when we're not in SF1
			window.location.href = "/" + component.get("v.expense.Id");
		}
	}
})