init.rb

# First run script/generate redmine_plugin add_link

# Put in vendor/plugins/redmine_add_link/init.rb

require 'redmine'

Redmine::Plugin.register :redmine_rt_link do
  name 'Redmine Add Link'
  author 'Holger Just'
  url 'http://dev.holgerjust.de/projects/redmine-misc'
  author_url 'http://meine-er.de'
  version '0.1.0'
  requires_redmine :version_or_higher => '0.8.0'

  # caption can also be a i18n symbol
  menu :top_menu, :my_link, {:controller => 'my_controller', :action => 'my_action'},
       :caption => "My title"
end