Rakefile in ultrasphinx-1.11

- old
+ new

@@ -1,5 +1,6 @@
 require 'rake'
+require 'rake/packagetask'
 require 'rake/rdoctask'
 require 'spec/rake/spectask'
 require 'rdoc/rdoc'
 require 'rdoc/generators/html_generator'
 require 'rdoc/generators/template/html/html'
\ No newline at end of file