adding current_ability to helper methods - closes #361

lib/cancan/controller_additions.rb

@@ -286,7 +286,7 @@ module CanCan
 
     def self.included(base)
       base.extend ClassMethods
-      base.helper_method :can?, :cannot?
+      base.helper_method :can?, :cannot?, :current_ability
     end
 
     # Raises a CanCan::AccessDenied exception if the current_ability cannot

spec/cancan/controller_additions_spec.rb

@@ -6,7 +6,7 @@ describe CanCan::ControllerAdditions do
     @controller = @controller_class.new
     stub(@controller).params { {} }
     stub(@controller).current_user { :current_user }
-    mock(@controller_class).helper_method(:can?, :cannot?)
+    mock(@controller_class).helper_method(:can?, :cannot?, :current_ability)
     @controller_class.send(:include, CanCan::ControllerAdditions)
   end