to_s cast on getValue and max_task_parallelism in cluster

examples/simple/redis_word_count_topology.rb

@@ -14,7 +14,7 @@ module RedStorm
     class RedisWordSpout < RedStorm::SimpleSpout
       output_fields :word
 
-      on_send {@q.pop if @q.size > 0}
+      on_send {@q.pop.to_s if @q.size > 0}
 
       on_init do
         @q = Queue.new
@@ -51,6 +51,7 @@ module RedStorm
         when :local
           max_task_parallelism 3
         when :cluster
+          max_task_parallelism 5
           num_workers 20
           max_spout_pending(1000);
         end

examples/simple/word_count_bolt.rb

@@ -9,7 +9,7 @@ module RedStorm
       # block declaration style using auto-emit (default)
       #
       on_receive do |tuple|
-        word = tuple.getString(0)
+        word = tuple.getValue(0).to_s
         @counts[word] += 1
 
         [word, @counts[word]]