Add :recurse option to Type.load to refine the loading of nil values.

Signed-off-by: Dane Jensen <dane@rightscale.com>
Add quick note about recurse option to changelog.

Signed-off-by: Dane Jensen <dane@rightscale.com>
Support :recurse option for Hash.load

Signed-off-by: Dane Jensen <dane@rightscale.com>
Add missing hashes.rb for hash specs.

Signed-off-by: Dane Jensen <dane@rightscale.com>
Merge pull request #92 from rightscale/recursive-loading

Add :recurse option to Type.load to refine the loading of nil values.
Attributor::CSV should generate a String example
CSV should also dump String values
Update CHANGELOG with issue #89 resolution note