Testlink and Redmine Cloud Integration

Hi all,

I need to configure testlink and redmine integration, but my redmine is on cloud.
How can I do the following steps?

1. Copy your plugin directory into #{RAILS_ROOT}/plugins (Redmine 2.x) or #{RAILS_ROOT}/vendor/plugins (Redmine 1.x). If you are downloading the plugin directly from GitHub, you can do so by changing into your plugin directory and issuing a command like git clone git://github.com/user_name/name_of_the_plugin.git.