Updating for release 2.3
Merge pull request #239 from klynton/master

Update to 3.2.1.
Merge branch 'master' of github.com:puppetlabs/puppetlabs-training-bootstrap
Updating for release 2.4
Merge pull request #240 from klynton/master

Make sure /usr/src/installer is created
Updating for release 2.5
Merge pull request #241 from casharma/321-release

Updating for release 2.5