Fix compatibility with Ruby 1.8

While it is recommended to use Ruby 1.9 or 2.0 on workstation, we can
still try to be compatible with 1.8.

Thanks to @edwardchuang for finding this!
Update changelog
Comment out long installs
Finalize changelog
Post-release bumps
Change rsync option from --delete to --delete-after to resolve the --delete-during issue

Resolving Rsync 3.0.7+ error

FATAL I/O ERROR: dying to avoid a --delete-during issue with a pre-3.0.7 receiver.
rsync error: requested action not supported (code 4) at flist.c(1947) [sender=3.1.0]

rsync version on workstation is 3.1.0
rsync version on node 3.0.6
Merge pull request #331 from koodough/patch-1

Change rsync option from --delete to --delete-after to resolve the --del...
Added support for Linux Mint
Merge pull request #333 from inakiabt/master

Added support for Linux Mint
added bootstrap support for Oracle Linux
Merge pull request #334 from coderjun/master

added bootstrap support for Oracle Linux
Avoids the default ssh_config files from reading the default OpenSSH
configuration files.

When specifying an alternative location of OpenSSH configuration,
it is merged into the configurations in the default location since
Net::SSH.start itself loads OpenSSH configurations unless
options[:config] is false.
Follows the previous commit in tests.  Fixes a test failure.
Avoid duplicating the same expectation.
Merge pull request #341 from yugui/feature/alternate-ssh_config

Avoids the default ssh_config files from reading the default OpenSSH configuration files.
Changelog update
Add a --clean-up option to the `cook` command to clean up the kitchen automatically on the server after a cook
Extract code to clean up after cook into it's own method
Make clean_up option available to the bootstrap command
Merge pull request #345 from cgunther/cook-clean-up

Add a --clean-up option to the `cook` command to clean up the kitchen automatically on the server after a cook

Fixes #292 and #267