update README

Rakefile

@@ -5,9 +5,13 @@ require 'hoe'
 
 Hoe.spec 'pg-ldap-sync' do
   developer('Lars Kanis', 'kanis@comcard.de')
-  
+
   extra_deps << ['net-ldap', '>= 0.2']
   extra_deps << ['kwalify', '>= 0.7']
+
+  self.readme_file = 'README.rdoc'
+  spec_extras[:rdoc_options] = ['--main', readme_file, "--charset=UTF-8"]
+  self.extra_rdoc_files << self.readme_file
 end
 
 # vim: syntax=ruby