RVM build wrapper for Jenkins

After updating RVM plugin, you need to update your project's configuration files.

1. Move to your Jenkins home directory.

$ cd <Jenkins home directory>

2. Get update script and save it to temporary directory.

$ curl -o /tmp/convert.rb https://raw.github.com/jenkinsci/rvm-plugin/master/bin/convert.rb

3. Update project configuration file.

$ jruby /tmp/convert.rb jobs/<project>/config.xml

The update script renames original configuration file to <original file name>.bak in case update fails.