Add the `osx-bootstrap::includes` and `osx-bootstrap::rbenv` recipes
Add the `osx-bootstrap::java` and `osx-bootstrap::ruby` recipes
Add the `osx-bootstrap::postgresql` recipe
Add the `osx-bootstrap::machine` recipe
Enable lookups by MAC address in the `osx-bootstrap::machine` recipe
Introduce the `OsX::Bootstrap::Ssh` library and use it, instead of `ssh-keygen`, to generate SSH public key file contents from private keys
Install Homebrew's `openssh` package to replace OS X's preinstalled, outdated version
Update the `xcode-xcode.rb.erb` template to use Homebrew Cask's new header syntax
Set the `xcode` cask version by file naming convention in the `osx-bootstrap::xcode` recipe
Add a monkey patch for the `Chef::Provider::Package::RbenvRubygems` provider so that the `rbenv_gem` resource doesn't fail in Chef 12