Merge pull request #5 from mspaulding06/master

Added official release promotion scripts
Updated mirror url
Checkbuild takes branch as argument
Promotion scripts updated for 3.3

* Cron job now promotes for 3.2 and 3.3
* Nightly script is version agnostic (must supply branch and version)
* Release script has been updated with changes from nightly script
Jenkins builder kickstart added
Merge branch 'master' of https://github.com/mspaulding06/releng-scripts