shelly.rb in shelly-0.0.39

- old
+ new

@@ -1,10 +1,12 @@
 require "rubygems"
 require "core_ext/object"
 require "core_ext/hash"
 
 require "yaml"
-YAML::ENGINE.yamler = "syck"
+if YAML.const_defined?(:ENGINE)
+  YAML::ENGINE.yamler = 'syck'
+end
 
 require "shelly/helpers"
 require "shelly/model"
 
 module Shelly