Minor change on served address build process. Fixes #6 (#9)

Author: joanlopez

cmd/killgrave/main.go

@@ -19,7 +19,7 @@ var (
 func main() {
 	host := flag.String("host", "localhost", "if you run your server on a different host")
 	port := flag.Int("port", 3000, "por to run the server")
-	imposters := flag.String("imposters", "imposters", "directory where your imposter are saved")
+	imposters := flag.String("imposters", "imposters", "directory where your imposters are saved")
 	v := flag.Bool("version", false, "show the version of the application")
 	flag.Parse()
 
@@ -35,7 +35,7 @@ func main() {
 		log.Fatal(err)
 	}
 
-	httpAddr := fmt.Sprintf(":%d", *port)
+	httpAddr := fmt.Sprintf("%s:%d", *host, *port)
 	log.Printf("The fake server is on tap now: http://%s:%d\n", *host, *port)
 	log.Fatal(http.ListenAndServe(httpAddr, r))
 }