Correct README.rdoc

README.rdoc

@@ -79,7 +79,7 @@ Here is an example of setting the tracker class name using a rails initializer
     track_history     :on => [:title, :body], :scope => :post, :track_create => true, :track_destroy => true
   end
 
-  # The modifier can be specified as well 
+  # The modifier can be specified as well
   class User
     include Mongoid::Document
     include Mongoid::Timestamps
@@ -97,30 +97,30 @@ Here is an example of setting the tracker class name using a rails initializer
 
   track = comment.history_tracks.last
 
-  track.undo! # comment title should be "Test"
+  track.undo! user # comment title should be "Test"
 
-  track.redo! # comment title should be "Test 2"
+  track.redo! user # comment title should be "Test 2"
 
   # undo last change
-  comment.undo! @user
+  comment.undo! user
 
   # undo versions 1 - 4
-  comment.undo! @user, :from => 4, :to => 1
+  comment.undo! user, :from => 4, :to => 1
 
   # undo last 3 versions
-  comment.undo! @user, :last => 3
+  comment.undo! user, :last => 3
 
   # redo versions 1 - 4
-  comment.redo! @user, :from => 1, :to => 4
+  comment.redo! user, :from => 1, :to => 4
 
   # redo last 3 versions
-  comment.redo! @user, :last => 3
+  comment.redo! user, :last => 3
 
   # delete post
   post.destroy
 
   # undelete post
-  post.undo! @user
+  post.undo! user
 
   # disable tracking for comments within a block
   Comment.disable_tracking do