This accomplishes adding the Jenkins script inside a git-tracked file.
http://squish.ish.com.au/tasks/18676
The script has been placed in the scripts/jenkins_build.sh
Set the username, host and password using environment variables in jenkinks_build.sh
The shebang is now placed at the top of the script.
Fix the shebang line and update jenkins_build.sh with latest updates from Jenkins.
Assigned execute permission to script/jenkins_build.sh
Merge pull request #469 from webstream-io/viks-adding-the-Jenkins-script-inside-a-git-tracked-file

This accomplishes adding the Jenkins script inside a git-tracked file.