Merge pull request #101 from printercu/patch-1

Collection delegates all Array-instance methods to elements array

Author: guilleiguaran

lib/active_resource/collection.rb

@@ -4,7 +4,7 @@
 module ActiveResource # :nodoc:
   class Collection # :nodoc:
     include Enumerable
-    delegate :to_xml, :to_yaml, :length, :collect, :map, :each, :all?, :include?, :to_ary, :size, :last, :first, :[], :to => :to_a
+    delegate :to_yaml, :all?, *Array.instance_methods(false), :to => :to_a
 
     # The array of actual elements returned by index actions
     attr_accessor :elements, :resource_class, :original_params