Rakefile in contextio-1.6.0 vs Rakefile in contextio-1.7.0

@@ -17,9 +17,10 @@
   warn "Run `bundle install` to install missing gems."
   exit e.status_code
 end
 
 require 'rake'
+require 'bundler/gem_tasks'
 
 require 'rspec/core/rake_task'
 RSpec::Core::RakeTask.new
 
 task :test    => :spec