Rakefile in coco-0.7 vs Rakefile in coco-0.7.1

@@ -1,6 +1,7 @@
 # -*- encoding: utf-8 -*-
 
+require 'rake/dsl_definition'
 require 'rake'
 require 'rspec/core/rake_task'
 
 def ruby_files_for_shell
   files = Dir.glob 'lib/**/*.rb'