Update existing plugins to use the new utils plugin.

data/plugins/util/command.rb

@@ -3,9 +3,15 @@
 def valid_arg_length(args, length, player, message)
   valid = length.kind_of?(Range) ? length.include?(args.length) : length == args.length
 
-  if (!valid)
-    player.send_message(message)
-    return false
+  player.send_message(message) if !valid
+  return valid
+end
+
+# Add a has_keys? method to hash
+class Hash
+  
+  def has_keys?(*keys)
+    keys.each { |key| return false unless has_key?(key) }
+    return true
   end
-  return true
 end