fix feature step for node saves

Author: sdelano

features/steps/node_steps.rb

@@ -50,7 +50,7 @@
 Given /^it includes the recipe '([^\']+)' at version '([^\']+)'$/ do |recipe, version|
   self.recipe = "recipe[#{recipe},#{version}]"
   client.node.run_list << "recipe[#{recipe},#{version}]"
-  client.save_node
+  client.node.save
 end
 
 Given /^it includes no recipes$/ do