Merge pull request #36 from andrewharmellaw/master

Addition of Clone Workspace Publisher Plugin Support
Merge pull request #39 from andrewharmellaw/master

New tests showing how to use the configure block to set up various SVN Browser implementaitons
added support for system groovy build steps
Merge pull request #40 from CoreMedia/system-groovy

System Groovy Steps
Updated the README.md
added support for groovy build steps
Merge pull request #41 from CoreMedia/groovy

Groovy Build Steps
Setting next revision
Aligning the new 'existing job' field
Allow system properties to be used when running from the command line.
Take into account new name of field for CopyArtifact plugin
Merge pull request #42 from quidryan/master

Some cleanup
Merge remote-tracking branch 'upstream/master'