Rewrote Mongoid::Search::Util.keywords to work with methods
Red and green test to describe situation when setting grandparent's(deep) fields as keywords
Test for specifying method as keyword
Added support for localized fields
Merge branch 'master' of git://github.com/mauriciozaffari/mongoid_search

Conflicts:
	lib/mongoid_search/util.rb
Merge pull request #47 from tmwh/master

Method as keyword (not only fields)