RedJenkins allows you to assign your project's testcases to issues in Redmine. It also allows you to create and run manual tests for your project in Redmine. For a more thorough explanation see here.
Step 1: Changing into your plugin directory (e.g. C:\Bitnami\redmine-3.0.0-0\apps\redmine\htdocs\plugins) and clone the project by:
git clone https://github.com/Pepperrs/red_jenkins.git
Step 2: install missing Gems run this to install missing gems
bundle install --no-deployment
Step 3: Changing into your root directory of Redmine (e.g. C:\Bitnami\redmine-3.0.0-0\apps\redmine\htdocs) and run the following command:
rake redmine:plugins:migrate RAILS_ENV=production
or
bundle exec rake redmine:plugins:migrate RAILS_ENV=production
Step 4: Restart Redmine
See also: http://www.redmine.org/projects/redmine/wiki/Plugins