update Vagrantfile for vagrant 1.1+
Merge pull request #39 from bhouse/master

Update readme for vagrant 1.1+.
create option pretty_print.
Pin rspec back to ~> 2.13.0.
Deprecating Ruby 1.8.
Add support for Linode!
Merge pull request #42 from fnichol/linode-support

Add support for Linode!
Merge pull request #41 from higanworks/backup_with_pretty_print

Add new option pretty_print for knife server backup
Release 1.1.0, with Linode support.
Up version for development.