Fix broken NodeJS samples

Broken by CLJS-722 (b299a6b)

Author: jeffdik

samples/nodehello.cljs

@@ -1,8 +1,10 @@
-(ns nodehello)
+(ns nodehello
+  (:require [cljs.nodejs :as nodejs]))
 
 (defn -main [& args]
   (println (apply str (map [\space "world" "hello"] [2 0 1]))))
 
+(nodejs/enable-util-print!)
 (set! *main-cli-fn* -main)
 
 (comment

samples/nodels.cljs

@@ -14,4 +14,5 @@
 (defn -main [& paths] 
   (dorun (map println (mapcat file-seq paths))))
 
+(nodejs/enable-util-print!)
 (set! *main-cli-fn* -main)