How to improve an existing Jenkins-CI plugin - a cheat sheet (using the SVN-Tag plugin as example):
  1. Fork https://github.com/jenkinsci/svn-tag-plugin
  2. Create a local repo:
    git clone git@github.com:martoe/svn-tag-plugin.git
    cd svn-tag-plugin
    git remote add upstream https://github.com/jenkinsci/svn-tag-plugin.git
    git pull upstream master
  3. Change settings.xml according to the Plugin tutorial
  4. Import the project into eclipse
  5. Run “mvn install”