README.rdoc in xapian_db-1.3.5.4 vs README.rdoc in xapian_db-1.3.7

@@ -30,13 +30,13 @@
 
 <b>If you found a bug or are looking for a missing feature, please post to the {Google  Group}[http://groups.google.com/group/xapian_db]</b>
 
 == Requirements
 
-* ruby 1.9.2 or newer
+* ruby 2.0.0 or newer
 * rails 3.0 or newer (if you want to use it with rails)
-* xapian-core and xapian-ruby binaries installed
+* xapian-core and xapian-ruby binaries 1.2.x installed
 
 == Installing xapian binaries
 
 On OSX, I recommend to install the binaries using homebrew like so: brew install xapian --ruby.
 Another option is to install and require the xapian-ruby gem; this works for linux, too. Make sure to add the gem to your Gemfile in this case.
@@ -192,10 +192,36 @@
     blueprint.natural_sort_order do
       "#{surname} #{name}"
     end
   end
 
+You can specify a Ruby method for preprocessing the indexed terms. The method needs to be a class method that takes one argument (the terms to be indexed) and
+returns a string. You can configure it globaly in the config or on a blueprint. For example, this setup will make words with accented e characters searchable
+by their accentless form:
+
+  class Util
+    def self.strip_accents(terms)
+      terms.gsub(/[éèêëÉÈÊË]/, "e")
+    end
+  end
+
+  XapianDb::Config.setup do |config|
+    config.indexer_preprocess_callback UtilT.method(:strip_accents)
+  end
+
+You may use attributes from associated objects in a blueprint; if you do that and an associated object is updated, your objects should be reindexed, too. You can tell XapnaDB about those dependencies like so:
+
+  XapianDb::DocumentBlueprint.setup(:Person) do |blueprint|
+    blueprint.attribue :address, :as => :json
+
+    blueprint.dependency :Address, when_changed: %i(street zip city) do |address|
+      Person.joins{ address }.where{ adresses.id == my{ address.id } }
+    end
+  end
+
+The block you supply to the dependency declaration must return a collection of objects that should get reindexed, too.
+
 If you want to manage the (re)indexing of your objects on your own, turn off autoindexing in your blueprint:
 
   XapianDb::DocumentBlueprint.setup(:Person) do |blueprint|
     blueprint.autoindex false
   end
@@ -243,9 +269,13 @@
   results = XapianDb.search "fo* or baz"
 
 You can query attributes:
 
   results = XapianDb.search "name:Foo"
+
+You can force the sort order:
+
+  results = XapianDb.search "name:Foo", order: [:name]
 
 You can query objects of a specific class:
 
   results = Person.search "name:Foo"