Added sample application (#184)

Author: Guy Baron

examples/vacation_app/cmd/flights.go

@@ -4,15 +4,15 @@ import (
 	"bufio"
 	"fmt"
 	"os"
-  
+
 	"vacation_app/messages"
 	"vacation_app/trace"
+
 	log "github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 	"github.com/wework/grabbit/gbus"
 )
 
-
 var runFlightsgServiceCmd = &cobra.Command{
 	Use:   "flights",
 	Short: "Run the flights service",