salimfadhley/jenkinsapi — pull request #76 by baijum (2013-05-06 09:46:47+00:00)
Title: Cause can be given to build with or without params

The "build" and "buildWithParameters" accepts a cause parameter.

From Jenkins job configure page:
"...Optionally append &cause=Cause+Text to provide text that will be included in the recorded build cause."